Howdy Mr. Clcotner and welcome. Do you mind if I call you Mr. CL?
I know of several Beeks that run a 9 frame spacer in a 10 frame hive. Nine frame spacer is a common item for sale at the larger suppliers. Hand tremor is a pain, I have to deal with such and makes grafting eggs difficult. I can take a med for tremor that helps me a lot, non narcotic non addictive, no ill feelings that are noticeable to me. Ask your doc, maybe,,maybe not,,, help in your case. I deliberately did not name the medication as I don?t think Beemaster is the correct place to mention.
I also am developing bumble fingers, that is bumbing into items and knocking things over with my hands. No complaints, comes with age. So when I work frames, graft eggs etc. I pay special attention and that issue is solved. Just a note, bee stings on my hands appear to lesson my arthritis issues of my hands. Ya know, just occurred to me, now that I think of it, I am a physical mess but a happy old fert.