I run a msr ez-pull an its awesome, can pull with one finger, with hd clutch springs, I use my clutch every time I make a gear change, I use my blaster to go have fun, so if the tranny breaks thats no fun, ive already shattered a shift drum an broke a shift shaft an that was with clutch. Now when I raced motocross
I never used the clutch except for out of corners, I just slammed gears, but I didn't care if it broke, I was there to win, I was into the race engines every few weeks to make sure they were always in top condition