@shaunp1912 There's lots of info on here, please use the search engine;
See here dude;
https://dt125r.co.uk/topic/32/how-to-carburettor-tuning
http://www.ngksparkplugs.co.za/technical/technical-spark-plugs/
@shaunp1912 The DTR's, unlike the E, don't generate enough power to operate the electrical components properly. A flat battery, even on an E, causes issues with the valve.
So that sounds like your problem.
@Calum there’s wasn’t any issue I started using it to see if it actually did anything problem was my bike ran faultless and the only thing I noticed was the spark plug never had carbon build up and the additives main claim was that it cleans plugs I ran 50litres worth through the engine didn’t do the valves or anything never had to touch the engine