If you start the KiPass incantation from the second paragraph anything could happen to the bike, including sticky calipers.
Did you change just the caliper and pads or did you change everything in the calipers too (pistons, seals)? If you used the old pistons, I would inspect them very carefully to make sure there is absolutely no ridge on the surface that could be hanging up on a seal or dust seal. If you can push the pistons back into the caliper with bare hands then the pistons should be OK.
Next, did you change the worn pad pins? If not, you may be providing an area for the pad to hang up on by mistake.
Finally, if it is not mechanical and the brakes are still dragging, it must be hydraulic pressure. Make absolutely sure the master cylinder piston is returning all the way to the home or retracted position. Make sure all passages in the master cylinder are clear; one tiny piece of seal or any type of debris can clog a cylinder port and allow pressure to be retained in the slave side of the system.
It also could be something really odd like a twisted caliper mounting tab on the front fork; this could allow the caliper to sit at an angle to the rotor and <perhaps> cause some odd kind of force between the pads and the caliper. Check too to see if the pads slide easily inside the caliper.
Frankly I am perplexed as to what is causing your brake problems and suspect some underlying, and undiagnosed, cause. Wearing the pad pins is odd in the first place but to have a new caliper (and I assume pistons and seals) and pads bind is really suspect. Modern brakes are usually fantastically reliable so you having two different problems after changing calipers makes me think the root cause is still there. You could try reverse flushing the system to see if there is a piece of debris somewhere in a line or something, or take the lines completely off and flush them individually.
Brian
Ok, my left caliper is dragging. I had an issue with one of the brake retaining pins on the left caliper. I rebuilt it replacing all the seals and one piston. Bled it and the left caliper still drags. I dissasembled to make sure everything was still good, reassembled and it was still dragging. I decided to take it apart again, clean and hone the rotors and while it was apart, decided to try replacing the caliper in case there was damage I could not see from the retaining pin incident.
I put the new caliper with new pads all the way around and again bled the system. No joy. I am at a loss and can not think of anything else that would cause the left caliper to drag. My right caliper functions as it should. I was hoping to replace my wheel bearings and ride down to Mountain Home/Mountain View this weekend but it doesn't look like that will happen. I would be happy with just having my issue fixed.
Any ideas? Is there a brake dance I need to perform like any of the numberous KIPASS jigs?