adam bike doctor?

well ive had the barrel off yep the piston had a slight score( more of a scratch ) anyway i rubbed the piston with some wet n dry put the ( perfect) rings back on and done her all up new 2 stroke as well as other 7 days to order im now usin castrol tts and tried to start her 3 attempts later she started and ticked over (and sounds nice n smooth ) except........
the start switch was still on me thumb not the best i know but ive bought a new switch which will come this week speak 2 u soon