Hello guys, so i just got a 1999 cr 125r( it has fmf gold series and silencer) in july and i rode it all summer fine it ran strong intill the end of november. it started to loose power and got harder and harder to kick. then finally i was in 4th gear pretty high reved it bogged down and it wouldnt start again after that. i checked the plug and the electrode melted off or something. so i replaced it . i checked that i was getiing fuel. i had no compression so i took my top end apart turns out the piston ring was melted to the piston. the piston in there was a 53.94 which is stock so i replaced that with a wiesco 53.94 top end kit and cleaned my carb two days ago. i got the bike together and it started up 3rd kick it ran fine intill it warmed up then it didnt want to start. i jump started it ( only with choke on then it can go off) and it runs fine in all gears if i let it start to rev down and try to bring it back up it dies out. (Also previous owner said he did the crank and reeds last spring) any ideas in the rite direction would be helpful. (also took the plug out was alittle black resido notthing that crazy i replaced the ngk with a champion)but i figure it works somewhat since it will run when i jump start it.