My camera came Friday and looks in good nick. The rangefinder 'ghost' was a bit faint so I removed the top cover and cleaned the optics - except the projection glass, which I didn't touch - with a cotton bud and some isopropyl alcohol. When I replaced everything I must've misaligned the distance wheel very slightly as the rangefinder was about a foot out (at 4'). I replaced it and adjusted the little screw in the back slightly so 4' on the dial equates to 4' on a tape-measure and infinity equates to above 50'. The ghost is now much clearer and the view through the finder brighter.
I didn't do any scientific checks with the Prontor shutter other than to see that the speeds varied with respect to each other and looked 'about right'. All very smooth anyway. Tested it with a flashgun and the X position is fine - didn't check 'M' position. I actually have about five unused flashbulbs left and a Zeiss Icoblitz folding flashgun, but I need a new battery for it (or make up a stack of cheap 'pound-pack' 3V lithium cells)! Lens looks fine and bellows appear sound but I'll tell better when I examine the negs under a glass on the lightbox. They're hanging up to dry as I type.
However... I made a bit of a horlicks of loading the film!
I put an Ilford FP4 in it and as I was winding it onto the start, mistook the thick black bar for the number 1. Subsequently I lost the first four shots and had blank film at the end. I was looking for a big fat number through the red window and it's likely quite a faint number as I found when I examined the backing paper. D'oh...
I also found that there is a 5mm overlap between frames, so I wound the backing paper back onto the spool, pretended it was a film and ran it through. I observed that the frame counter is slightly out-of-kilter with the number in the red window, although I'm wondering if this is because the backing paper alone is of less diameter than if it had a film in it. Now I know how to start the film at the right place I can check this as I go. I was relying on the Baldix frame counter and should've checked the window.
Anyway... The negs look fine and I'll tell better tomorrow. I'll have to photograph the negs on my lightbox with my Sony RX100 II until I get a set of extension tubes for my 5D Mk:1 and I can use that. I don't have a 6x6 scanner.
Having fun with it anyway!