thinking about popping a 1 tooth smaller gear on my 700 this summer, i dont' need a new chain for that right? is gearing down harder on the clutch and/or chain? any pro's or con's to this? is it worth it? i was lookin at prices and it's around $30, the top gear/smaller one is the one i should look at swapping out for better performance right? i'm surprised i don't see more threads about this on here.