I have spent one hour with this...
i bought a Topcor Super 65mm f7 the other day in order to use with a 985 bought a week before.
Of course I read extensively before buying, and I opted for the newer type of Super 65mm, the one recessed so it allows some movement, the ones on black boards, meant for the Horseman VH-R matching infinity stops but the Horseman I have, the 985, has infinity stops set for the previous version of the lens, non-recessed. I took a couple shots indoors, tripod, focusing with RF and on GG, there's a difference, focusing rail had to be adjusted between the two, and on the result pictures, the one taken with GG is sharper. By pointing at some distant roof edge and using a millimetric printed ruler by the edge of the focusing bed I estimated I should move the infinity stops 1mm ahead.
Good! let's take the screwdriver and test this.
Easy, trivial, but ... the damn skrews don˝t move <--here many profanities untranslatable about the son of bad life lady who tightened the skrew like the bolts of a lorry wheel -->
these two for the green stop on the left side. The ones on the right side stop came smoothly, but these two are damn stuck:
I used a syringe for a drip of penetrating oil, waited, tried carefully, waited more, tried harder, then took a small hammer, a foam under the bed and hammered reasonably the slot on the skrewhead in order to deepen it a bit and so offer better grip to the skrewdriver. Nothing. It's stuck. Put another drop of "unlocking" oil, waited a bit, tried again but I just caused some wear.
Next step would be a tiny drill, find some wider skrews as replacement, but I am in no mood for this.
Or, grind the inner edge (the one closer to the body) but then it's irreversible...
will take some shots of architecture, near and close and landscapes to see how it goes, but I guess if I can't unskrew this stop, I may have to buy the older type of Super 65mm for handheld RF use.
Btw, I tested the lens with the 4x5 increasing back. It's usable but focusing must be done by pushing the lens by hand inside the body, outside the rails. So yes doable, yet no so convenient.
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