Tom, I would like to take you up on your offer but I have not been able to figure out how to send a PM.You must use a lube designed for breathing air applications. If you use or will be using Nitrox you must use an Oxygen compatible breathing air lube. I just use Tribolube 71 on all my regs which is Oxygen compatible for Nitrox. You can get it in a tiny squeeze pack for like 7 or 8 bucks. If you pm me your address i will send you a pc of the EPDM sheet for your diaphrams. I have more than enough for several years.