So I just swapped out sprockets and the new one is a little larger. The problem comes when I try and adjust the rear axle placement to get the right amount of tension in the chain. I can get it just where I want it when I'm not sitting on the bike, but the second I put a load on it the chain tightens up really good. So I go ahead and move the axle forward to a position where the chain has the right amount of slack when I'm on the bike. Then whenever the bike is unweighted there is a gross amount of slop in the chain. So the question is how can I find a happy medium so that the chain isn't extremely tight when I'm on it and isn't really sloppy when its unweighted?