Originally Posted by nayr497

Thanks for all the replies. Now I'm a bit confused though...

Working from the saddle down (saddle being the "top" if the bike is tires to the road)...the upper pulley has the most play, about 1/8" to 1/4". The lower pulley, one closest to the road when riding, has only the slightest amount of side to side play.

I think I'm just a bit confused with terminology/upper vs. lower pulley, as the upper is closest to the cassettes and thus seems to be the one that would need the most play side to side.