Im in the middle of changing my rear brake pads. Everything was going smooth until I had to reinstall the pads. The piston side pad slides in just fine, however there is no way that the outer pad will slide in, even with some force.

Here are two pics (one with the piston side in, and one without any pads in)
Please let me know if the gaps look right.

 

Nevermind, got it. Make sure you lube the caliper slide pins kids.