I'll leave it alone all weekend and then put it all out in the sun on Monday. I guess I'm just stressing about my Christmas deadline. As soon as I realised the paint would take on fingerprints, etc, I put that part down and left it, so nothing should be spoiled. I would be very mad at myself if I managed to spoil anything after all the time and effort I put into the paint prep.
As for the bearing, it came apart and was chucked accidentally during disassembly. This may become a bigger issue than I first expected as I have no idea what type of bearing it is. I just assumed this bearing would be readily available as per the other bearing on the machine. I guess my only other option is to see if I can disassemble the bearing housing on one of the other machines to see if it had the same one?
Good work on the 20 inch find. I love the idea of restoring something back to original specs...If I had more time on my hands, I'd restore SB 45's as an ongoing hobby because I've really enjoyed it (so far). I imagine the process would be easier once you've done the first one as well - that's what I'm hoping with my 20inch anyways. I'll start working on it in the new year but I was just so pleased for $50. I haven't had a really good inspection, so hopefully it doesn't come back to bite me!