well when i damagaed my trans on my 96 yz125, It was due to wheelie shifting without useing a clutch (I learned quick). It took the abuse one more time then bang It wouldnt Click and Stay in 5th or 6th. I ended up taking it all apart and replace one of the forks (i cant remember the price, They get damaged like the blaster ones do). Aswell it had damaged some of the gears on the shafts, unlike a blaster your pretty much stuck on having to diassemble the trans shafts to repair each individual gear.