ceejay

Wow! Did you swap out the balance & bridge - straight swap? Forget that, obviously both as the gen has no regulator arm.

Luckily this is a captive spring so won't fly away when released! Good luck.

Deeply shocked & saddened to receive the news of the passing of Nanuq. My sincere condolences to all your family. A true gent has been lost.

You have a older 21,000 vph movement based on the Valjoux 7750. The newer ETA 7750 has a beat rate of 28,000vph this will explain the different tooth count. This is the wheel you require (or similar) https://www.ebay.co.uk/itm/264294191948 Part number is Valjoux 705

Hand winding auto mainsprings...hell no! Especially on those tiny modern calibres! Only mainsprings I hand wind are those that are not replaceable, easily. Other than that, new mainspring, pressed in. I have on occasion came across new mainsprings that the retainer ID is larger than the diameter of the barrel it's going into. On these occasions, It has to come out of the retainer and be wound into a mainspring winder. Mainspring winders are ridiculously expensive but I managed to get a decent set, without remortgaging the house. As, said above make a note or take a picture before removing the old mainspring so you know what way it goes back in.

Some of his sales threads made me cringe.

“Expensive stuff” Brilliant! I’m out... Sent from my iPhone using Tapatalk

How did you come by such an extensive supply of restricted parts? These cold be advertised on any public site, why choose a forum for replica watches over a forum for genuine watches and parts?

Currently repairing a ETA 2824-2 with extensive 'drop' damage. Parts required for repair, Hour Wheel, Centre Seconds Pinion, Mainplate Centre Post & Escape Wheel. All purchased from my supplier with no drama. As you were...

There are eBay sellers that sell decants of Moebius lubricants (and other brands) I went down this route with the Horotec Episurf-Neo (epilame treatment) got 5ml as 100ml would evaporate faster than I use it! Handwinding mainsprings is never a good idea. New mainsprings will general just slip straight into the barrel from there retainer, just a little braking grease on the barrel is all that's required. If a new mainspring is available, then use it. 10 bucks for a spring is worth it just for the peace of mind. If a new mainspring is not available then a drop of D5 on a lint free rag and the spring pulled through. Invest in a set of Mainspring winders, the Chinese sets will suffice as long as you use them carefully and are not doing too many springs with them (the brass arbor hooks are their weak point) Gone over most of what was said by @automatico good, sound advice.

Little dab of blue loctite should keep it in place😉

There's a fake plate glued on top of the regular screw. You will need to remove it to gain access to the regular screw.

Attached is a research article on the hazards present with radium dials. Crockett_Robin_E_2012_Radium_dial_watches_a_potentially_hazardous_legacy.docx.pdf

Aliexpress? https://www.aliexpress.com/wholesale?catId=0&initiative_id=SB_20200807064339&SearchText=3135+movement

I trained in Horology with the guy that puts those watches together and owns Mr Jones watches!