Excuse me if I sound dumb lol. So you ordered special spring bars from Omega to fit the bracelet? Cause if so i would be super interested lol.
1.8mm is what was recommended to me. Fits like a glove. To clarify, this is to match the old 1861 bracelet on the new 3861 case. Just so we're on the same page. I'm no expert, but I don't see why a thinner bar would make much difference. Either way, I'm happy with my spring bars.
I just ordered 1.6mm spring bars because another poster said this was the correct size needed to do this modification