Hi all! On to my next project, AR3 restoration. I’ve been using the AR-3a Restoration Guide, which has been very helpful. I’ve got myself into a predicament. As I was cleaning one of the rheostats, my brush caught the coil and ripped it out. Like the others, this particular unit didn’t seem to have the hardened material that keeps the coil in place. The other 3 units are clean and usable. So, do I purchase a single, new L-pad w/ resistor noted in the guide or do I try to find a replacement rheos