Well, I got my camera back and it appears to be in good working order. As expected it cost likely several times what the camera is worth on the market to do the repair ($386 CAD incl shipping after tax or about $312 US), but it was something I wanted to do since the 1970's since it was gifted to me by a favorite uncle who just couldn't figure out how to use it, and it was my first decent camera.
I managed to shoot a roll of Portra 400 over the past few days, so should know soon if this thing is really any good
I used my Sekonic light meter for half of the shots and an iPhone app called Lumu Power Light Meter for the rest. It's been fun slowing down to check settings ... but I know I definitely screwed up a few times with the wrong exposure.
One thing I noticed is that the rangefinder focus patch (superimposed secondary image) has really faded over the years to the point it was almost impossible to focus. I did some searching and came across this site with a simple fix that made a HUGE difference:
http://rick_oleson.tripod.com/index-165.html
For my first attempt I made the small rectangular piece of tape a bit too large. It worked well, but the fix improved with a slightly smaller piece of tape. When looking through the viewfinder the rectangle from the tape needs to be no larger (mine is very slightly smaller) than the superimposed focus patch.
I tried color gels over the front window (that you look through) but while this method improved things a bit it didn't come close to working as well as the tape trick.