95 rear caliper/piston

I am hoping someone can help me with this one. I was doing my brakes today, and everything had been going fine until I was pushing the piston back into the rear right side caliper. The left side will go in so that it is completely flush with the caliper, but the right side will only go until it is about 1/8" above the caliper. Do I have to get a new caliper or piston or should I just keep turning till it goes in more? Any suggestions are greatly appreciated. Thanks

*EDIT* I was also looking into buying just pistons but I don't know what the difference between loaded and unloaded is. Thanks again

I would just keep turning it. If you can get the caliper on with the new pads even though the piston isn't fully in then don't worry about it.

A fully loaded caliper is what i think you mean.

A fully loaded caliper comes with everything, pads, just unbolt the old one and put the new one on.

And an unloaded is without the pads.

? Do you have the top off the master cylender? If you don't where would the fluid go. Just remember top it off when your done.