Just coming back to this with an update to help anyone looking for repair in the US.
I found retrofocal on ebay, and he did a very thorough job. He fixed the problem I was having along with some things that were mildly botched with my old servicing (by an amateur I guess). The turnaround time was very quick.
Most Olympus Trip 35 cameras bought used need to be serviced, so even though this costs some money, it's nice to know it should work for a long time. Plus, I don't think I have ever found a recently serviced one for sale under $150.