Jason - are you sure you have any new dry plates - they are all listed as sold on Etsy
Agulliver - sorry to hear you've left. Too much activity online often requires recovery.
I just realised that I had made my 15th post here in 14 years (!) and the Frankenstein camera plate comes up as a reminder of the last thing I had posted. It's great to hear of your efforts to veer into a plate venture and the camera restoration - your progress and creative thinking in using a 22volt source to restore the flash is impressive. No doubt for you this is tied in personally to the camera of your late father who would be pleased to see respect shown to the son of Frankenstein.
The dry plate has the fairly soft tonal range, typical of Selochrome plates. Trying to work vintage plates with everything from P/Q paper developer, Dektol, paint stripper and fairy liquid is on the internet so perhaps using a slower ISO than ISO20 for the rest of the plates?
I was in the darkroom and opened a pack of Agfa APX100 5x4inch sheet film. For some reason it wasn't fitting into the double dark slides and kept sliding out so I returned the sheet in the box and closed it up. In daylight, it is listed as 9cm x 12cm sheet sizes. I don't know if this would fit your camera, if you have the appropriate film sheath holders.
In any case, back to the imaging: the lack of correlation between the rangefinder calibration and the lens you've mentioned, although it's hard to ascertain from the image how this has been, if at all, repaired. Check out the zone of focus and the depth of field: it excludes the subject matter, suggesting that perhaps a little more work is required to tally the rangefinder unit with the lens focus.
If the groundglass was used, I can't be clear, however in the image of Plate 10, it's hard to know if the lens standard is truly perpendicular with the plane of the film - are you able to verify, that this is not just a digital camera lens' perspective convergence issue? If the lens standard is not perpendicular, perhaps it makes sense to see the fence and the tree branches in sharp focus, but the foreground subject missed.
I hope your efforts to keep restoring and recovering what was once lost, do not cease.
Kind regards,
RJ