HI AJ
I have a 2000 and have never worked on a 99. I'd assume though that they're pretty similar. I just checked my alldata subscription to refresh myself but as I thought, there is no mention of a larger/smaller pin. They should move freely though if they're like the 2000 which I highly suspect they are. I don't know if you have a subscription to alldata, but it's really worth the $. Currently it's $15.95 for a year. If I were you, I'd go to the site
http://www.alldatadiy.com, sign up and then you'll know for sure if there is a specific alignment etc on the pins. The other thing is, hi-temp is not the right lubricant to use. It is for the rotor to hub surface but not the pins. When you get a new set of pads, buy the hardware kit. It'll come with a small tube of silicone like material that is used for the sliders. Likely the high temp got hard on the sliders and stopped them from moving. I think the slider lubricant is called high-temp brake slider or something equally descriptive. It's almost clear, like vasoline, not grey like the high temp rotor lubricant.
Piper