It seems when I ride my '96 Sportster half the time I stop at a light or go to put it in neutral it is hard as heck to get it to shift. But then half the time it shifts absolutely fine. When I'm moving and up or down shifting I have no trouble, only when I'm stopped. Ideas? I suspect the clutch might need adjusting. Tried removing the 'derby' cover(I think that's what it's called) but 3 of the bolts feel like they are welded in...I know they aren't but shucks they won't budge.