Some of the info I picked up
"On a 2-stroke - Riding in 3rd gear, with a warm engine and the throttle BARELY cracked open, roll the throttle to 1/2. If the bike sputters and crackles, and you feel like you have to keep rolling on the throttle to smooth it out, the needle is too rich. If, on the otherhand, you get the dreaded 'buhhhhhhwaaaaa', the needle is too lean"
I for one am not confident enough to mess with jets and I haven't got the time with the bairn teething I only have limited time and I fill that with checking oils and cleaning her!
Could be a trip to westgate road for me there is a garage there who specialise in 2 smokers says he will tune the carb for £35
Ken