For some reason a guy made a thread on how to "de-restrict" the Dt125rs
Some were correct but made 3 mistakes
Remove the boost bottle on airbox to carb hose and bung it.
Blank off y.e.i.s. On inlet manifold.
Cut off the airflow guide on the inlet manifold. (the part that sits inside the reed block.
This has misinformed many people, so many previous owners of your DTs have been messed about with.
Here's what a Kitted out DT125r looks like next to the DT200wr
The DTR is so much more chunky. But it does have higher profile and wider tyres + all the accessories on.
I'll get some good shots outside soon when the light is good.
The lights inside look awful so I used BW.
So the oil pump was not flowing. Took it off and the outlet was block. Removed the hose tail and I drilled the smaller bore. Oil now flows through.
Without taking the pump alart again I am unsure if I have drilled too deep and the oil is bypass internally. By blowing through it and operating the throttle.. it doesn't seem to flow more or less on throttle position. Does there need to be drive to the pump and is it a variable gear inside is what changes the flow?
So going to have to inspect.
Or compare to another.
Also bike cuts out when put into gear with stand up or down.. I think it's a faulty sidestand switch
A few little things to sort 
Anyway.. a few pics
Actually it's 4 stroke with a fake expansion chamber 
Got the hang of it now. I will "repair" some of my broken images
Got a few small but satisfying jobs to do.
Fit the 17t front sprocket to gear up.
Fit stronger clutch springs (uprated wr200 ones)
Coolant and oil change.
Custom thicker core alloy radiator.
Replace LH crank case cover with a silver one to match.
General fine tune and visual tweeks.
I have it on the bench next to a standard one with a spare sub frame bracket. Bottom hose connector needs repositioning. Mounting brackets need welding on and also for the guard
Frame is now powdered
New tapered headset bearings installed.
Front end half on
New top bushes for the rear shocks to make it compatible.
Here's a little mock up.
Just waiting for my new bike lift to come.
I've got some pod filters on order + crank case vent filters.
Rejetted carbs using an online calculator (I will fine tune but as a starting point for the intake and exhaust mods)
I have a slightly nicer/longer seat now which will suit my stealth appearance.
It's very hard to visualize in your head but I think it's looking more or less like how I hoped
@rolz82 thank you, working through all the electrics. My least favourite thing
Started on the looming and electrics.
Repositioned the coils to clear the fuel tank.
Little jobs like that take a lot of time getting right.
My holster on the headlight number board is all part of the walking dead style bike. It definitely wouldn't be ridden with that on it even though I'm trained on glocks , this is just a replica.
Only used for pics 
@jonne123 I've had this on both dt125r and my dt200wr. Also have a stainless steel version on my DTR now
https://a.aliexpress.com/_BOgmx9
Been driving me crazy how the seller of the engine said it was from a cb750 but appears to be a cbx750 engine (much older + hydraulic clutch) rc17/17E
But the engine apparently had only done 12k
Also looks very new for something that would be 40 years old nearly.
After a lot of research the Japanese did a later 2007 LTD with the Rc17E engine when looking at the part numbers for the upper crankcase on this models parts diagram it confirms this.
This is a super rare models engine, + hydraulic clutch optional extra. On an import!
But it will work perfectly for me, just ordered the correct pulse generator.
Writing this down for future reference because I'll forget.
Finally my bar clamps came, 3 weeks.
I've got the controls, grip, master cylinders on. Front brake operational.
Choke and throttle cables.
Front headlight on the number board (not finished yet) more to add to it.
Pro taper contour bars.
Rear fender (when pulled out, it's a shovel! (Entrenching tool))
Slowly making progress.
@Calum cheers man, will keep posting when I get some big progress, stupid Chinese virus is holding up my parts
@Darty yes but 4 cylinders is a nice compensation
I've got a name for her.... "Lucille" 
So the carbs were very similar but not correct.
So I started again parts are taking so long to come from overseas
All new float bowl gaskets, diaphragms, o-rings and rejetted.
Powder coated parts
Stainless steel Allen cap bolts
@Calum the beauty of 2 strokes is you can take the cylinder off really quickly. I'd definitely pop the exhaust off and look up the port. You can buy and endoscope for £5 that plugs into your phone
@markus-w possible. The other thing with this engine is why does it have 2 oil fillers caps 
️ 1 says (don't open) but that's the sprocket side.
In some pictures I see that's where the dipstick is on some bikes. My dipsticks on the clutch cover side like most bikes.
Haynes don't do a cbx750 manual.
Just going to persist working through all the small bits.