Since all this talk about loose countershaft nuts i decided to attend to mine. yep loose so did the locktite job. now i notice although it probably was already there a strange noise. if i turn the rear wheel ,with the bike up on the stand, very slowly there is a metallic clanging from behind the countershaft nut sort of like a door lock locking. with the sprocket turning at about 1 rev per 3 seconds, it is about 7 clunks per revoultion of the front sprocket. it doesn't matter how slow you turn the rear wheel it is still there until the wheel is barely turning where it dissapears. if the bike is in gear it still does it with the clutch in and i have riden it since tightening the counter shaft nut and it runs fine. also it doesn't seem to be the chain either. any ideas?? possible future problem with gearbox??