I tried changing my brake pads but one the sliding pin/locking pin (where the two bolts which hold the caliper attach to) on the passenger side front caliper mount will not budge...the other ones slides back and forth but it is completely stuck...any suggestions? I guess I have been meaning to replace my calipers/brake lines...right now is just a bad time so any temporary solutions would be appreciated. Pads are almost gone.

Btw, this is on my 02 wrx.

 

WD40, but be careful where you spray it