I disassembled the hands of my Citizen Pilot Super Titanium Radio Controlled AS2031-57E a couple of times.  The second time because on the first attempt i evidently did not push the hour hand well and in practice it was not well fixed and moved receiving even small bumps. After the second attempt everything seems to be ok.  Except that i have the impression that giving a little more sustained blows on the wrist, the hour hand still has a slight movement, in the order of half a second or less. It is a normal, topical and usual thing about this movement, which, i remind you, is exclusively electronically managed, each hand independently, a clearance in the movement that it has of its nature, or it may depend on the hand is not yet well attached to the pin and should perhaps be replaced because the hole has slightly enlarged?

This is something a lot of beginners and amateurs struggle with Nev, being able to remove the staff without distorting the hole of a non steel balance wheel. Having the right tools to do this safely  and effectively is not easy. Even with something useful it takes a lot of practice, i spent two days not so long ago practicing cutting away the balance wheel hub of a staff using a 25mm diamond wheel.  I didnt manage to do it once without catching the underside of the wheel.

Then you should have something that prevents the case from moving. I just bought one of these Seiko S-210 but haven't received it yet.

This is english watch, I guess from Lankashire Watch Company. I am not sure if suppliers have staffs for it. Yes, making a staff is the normal solution here. You are happy with the tools, but look how the riveted staff has passed thru the balance arm hole. Do You think that the hole has correct diameter after that? I mean, if original staff is used, will You be now able to rivet it easy and keep the balance centered correctly?

Interesting, but not very accurate, unfortunately. Using the word "Radiation" without specifying the specific type of radiation [what is being radiated] is one of the commonest mistakes - and most confusing to non-technical people.  Also, I believe the commonest lume in general use nowadays is just a phosphor compound that is "charged" be exposure to light? I've never personally see a watch with tritium lume, and it's not something I would particularly want as the decay is quite rapid with a half life around 12.5 years. Tritium is also of course radioactive, emitting beta particles, and it can possibly cause cancer if ingested!   Re. geiger counters, it's also important to note that many on internet sites are fakes that detect RF rather than, or as well as, ionising radiation. Or just low quality that likely only detect gamma, or gamma and alpha. Only high quality mica window GM tubes will detect beta; all the cheap geiger counters I can see on on ebay at present that show the tubes, use glass or quartz - despite claiming to detect beta