Thanks!
The parts are actually not on the instructions as "not used". I've gone over the instructions time and time again and don't seem the part number anywhere. Oh well, guess they'll just end up in my spare box.
I was actually able to get the tracks onto my APC. Right now I'm letting it sit there to "train" the vinyl into that position before I start painting it.
Almost done with this model. I'm looking forward to being done because I have learned a LOT since I started working on this and can't wait to utilize that knowledge towards my next project(s).