Mike-
If you end up not having too much luck finding one after some time, I perhaps may be able to help. I happen to own two of them. The story behind that is I purchased my first one in or around 2010 (I think). Loved the camera so much I sought to get the legendary Ken Ruth CLA treatment a couple years later. However, when that was taking a bit longer than anticipated, and knowing I had a looming Yosemite vacation in 2012, I ended up purchasing another Medalist II off of eBay since I wasn't going to get my first one back in time. Got to know the second one well enough (you know, every camera that old has its own quirks) and ended up getting some of the best images from that Medalist II on the trip out of the 4 cameras in total I took. In hindsight, I'm glad I made the purchase. And when I finally got my first Medalist II back from Ken Ruth (CLA + 120 conversion), I was ecstatic. I love it and it is my primary street camera to this day. And I no longer had to roll film onto the 620 spools. I do take it out with me quite often.
As for the fate of the second Medalist II, I shot with it a few more times over the years, but it really has just been sitting on my shelf. Below is an image of them both side-by-side. The one on the left is the adjusted one and the one on the right is the one that hasn't been adjusted and still requires 620 spooled film. The one on the right is the one I'd be willing to part with. I'll be honest that it really could use some sort of cleaning/adjustment, but I feel pretty confident about it still working. I may just run a couple rolls thru it this weekend just to make sure regardless if you're interested or not, but that would be the one that I could part with, if we were to talk further on the matter. I think I also have its leather case somewhere, like the one on the right that I currently use, plus about two-dozen 620 spools somewhere, if I can find them.
At any rate, like I said, if you have no luck finding a "nicer" one (CLA, etc), and want to experiment around with one, we can talk. I'll see about shooting with it sometime soon to make sure it is still in decent working condition.
Cheers,
Jeremy