Cutting back ?

[DTlee]

I thought I should update this as I did fix the problem and never stated what fixed it on here. After all the messing around all it turned out to be was a split vacuum hose on the carb which I didn’t notice when I cleaned the carb originally. I had the hose off originally to check it wasn’t blocked but didn’t notice the small split in it. Thanks for all the suggestions though

[SpookDog]

@dtlee

That’s the power jet pipe, not vacuum 🤪

[DTlee]

@spookdog

Ah yes that’s the one !