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Hi Frank, you have dived headlong into the deep end. Hairspring work has to be the scariest thing a newbie has to tackle. Your hairspring appears to be bent and just putting it back into the regulator would not allow the balance to work properly. It might start oscillating but the performance would not be good. The proper thing to do is to unstud the hairspring, remove the hairspring from the balance, reinstall the hairspring on the stud carrier, reshape the endcurve and centre the collet to the balance jewel hole. This challenge would either make you or break you. Hope that you will be able to fix your watch. Welcome to the world of watchmaking. Watch this video. It think it'll give you an idea of the task ahead. From your 1st photo, I think you have a etachron type stud. Let me see if I can find a video on how to remove it from the arm.

Have read of the Tech Sheet attached on the balance section page 12. It may be bent but until you reposition it back in the regulator pins you'll never know. Cheers CJ 4R35B_4R36A.pdf

Good idea, working on it....

That is a stunning old Sea King you have! And a very cute little furry assistant also.

All right! Back together, cased up, and ready to rock and roll. Well, after I cased it and forgot the seconds hand. And then after I found a fitting back gasket. And then after I had to take it apart again because I forgot to put the automatic rotor back on. I did find a vintage Hadley Roma strap in red leather, as an homage to the original maroon strap. I'm super pleased with how it looks. Can I say chuffed as an American? I may polish the case at some point, but for now I'm just gonna wear it. And of course, pictures. First dial up, dial down, and on the wrist. Including the cat tax.

I will advice to share the idea first here before doeing something to the movement

I'm going to give that a go next time, thanks for a great idea @rossjackson01 One of my students uses this tool and swears by it https://www.cousinsuk.com/product/wheel-hand-roller-remover-bergeon?code=W1851 which is very like getting two sticks of pegwood under the wheel and rolling them in your fingers so they create a slight prying from underneath motion, I suppose. Maybe bind one end of the two sticks of pegwood so they are like tweezers.

Take the measurements and go for which ever on you like. An assortment us under £11.

Thanks for sharing! Valuable to know! Well deserved Ross!

Yes, I was so chuffed when he acknowledged me. I'd heard him talk about it and I had tried it by gentle pressure under the wheel and rolling the Pegwood in my fingers. The wheel rose. His way was to rotate the whole wheel in reverse. Learn something every time from Kalle.