Thanks for the advice! This is more of a practice piece for me so I would prefer to try everything on my own first (and destroy countless parts in the process!).
I actually tried the pinching and now the opening is too small. I will try to widen it the next time I work on this again.
I may potentially ruin the hands altogether so my next move could be:
1) look out for JF/TC/ARF/BP hands on m2m
2) get 116610 hands + dial and relume
3) get a BP 16610lv watch altogether and use its hands + dial
I had the same issue when swapping out the movements on the GMT, if you use one end of the tweezer to go up through the underside of the minute hand, you can gently widen the opening again by rotating the hand or tweezer. You have to do it gently and test the hand fitting after every couple of turns.
It worked for me! Good luck
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