Rear Brake feels sticky
 

Very quick question. Pulled my wheel off to change tire (new pilot power feels awesome), put it back on and went for a ride. Rear brake feels about half as powerful as normaland seems to stick or ride the caliper too long after I let off. Looking at the parts diagram I think I have the two shaft collars for the wheel mixed up. I have the spacer with the wide collar on the brake side. Does that make a difference? Or should I be looking somewhere else. I'm at work so figured I'd try and pull from experience before heading home and pulling the wheel off.

thanks gang.