I have replaced the worn down rear stock pads with new ones. Opened the bleeder valve and pushed the calliper all the way in and set the pads up in it and bolted them in. My problem is they fit extremely too tight. I am sure I pushed it as far in as it would go in. Am I missing something completely obvious?

 

Loosen the parking brake adjustment bolt. I had the same problem. Back that bolt off a little and they should slide in.