Thanks everyone for your replies, this is very helpful.
I think I will dive into the camera and try to loosen up the rangefinder. Maybe it also is just gunk and grime messing up the works.
I'm not sure I want to do anything with the shutter, I'm ok with only 1-1/250, assuming those are relatively accurate after a film test.
If I can't get the RF moving, no loss, I then will decide to send to Oleg. Postage is about $20, insurance about $2 for $200 coverage, considering the camera cost nothing, this is reasonable.
@milescl what kind of leather conditioning did you use? Anything special?