I have one worry after yesterday's fairly difficult but successful drive belt change on my Big Boy scooter. The main nut on the fron pulley now goes on much less further than before it came off. I read about a trick using a one inch paper card before putting the variator pulley front plate on, and skipped that. I wonder if that could be the cause? I just put the belt on the main axle and then put the front cover one. Here is what the difference looks like.