Hi Duke,   You're correct in that you can simply transfer the mainspring from the ring into the barrel. Just make sure it's seated correctly and is orientated the correct way. I understand why you asked the question as it is a little daunting the first time you do it but if done slowly with a flat implement there's very little that can go wrong.   Some people probably do it different but I've always used the other end of a pair of tweezers as they're solid and flat.   Good luck! By the way
    • Thanks
    1