So far I've been able to find every part that I need, it takes some searching and luck but somebody has these gaskets sitting on a shelf. The local parts stores are pretty much worthless except NAPA. I'm taking one of the hub gaskets there today to try and match it up with some they have. I've got a source about an hour from me that has a warehouse full of old small parts, gaskets, bearings, seals, etc. But nothing is cataloged or indexed so it's like finding a needle in a haystack but I've always found what I needed. For me part of the fun of restoring the old beast is the search. I'm retired so time doesn't matter. Yes, I could make the gaskets but where's the fun in that?