Feeling too much float? I find some limited heel angle adjustment to be a good thing. Interestingly, I just put some Garmin Rally pedals that fit Shimano on one bike and got a bit more float than I expected; pedals just aren't as tight around the (yellow) cleats as the 105 pedals. That incremental float bothered me for about 15 seconds and I didn't notice it the rest of the ride. What I like about having some float is that it seems to ensure happy alignment for my knees. Maybe not, but seems that way.