wont upshift,2nd to 3rd,3rd to 4th it feels like it just hits a wall,lever goes up and no gear locks in,also pops outta gear sometimes,,,,NORTH COUNTY YAMAHA says they cant duplicate the problem so they wont tear into the tranny,my guess is a bend shift fork or bad shift barrel or someting,its been back to NCY 2 times,total lenght about 40 days,those guys suck,I will never spend another dime there.We bought 4 atvs there last year,all in one purchase,cash,and they still wont help me.Its frustrating driving to the dez and after about a mile it just wont shift right,so when i go over the bars at 50 this season i guess a lawyer will handle it!