i had already drilled the lugs at 1.3mm. that's goodFor 2mm fat springbars :
1 - redrill the lugs to 1.3mm
2 - enlarge the last link on the bracelet with a 2mm round diamond file ... about 2 minutes
3 - enlarge the hollow endlinks tubes with a 2mm diamond file ... a bit long as you'll have to proceed slowly ... you can also just cut the tubes with a Dremel and open it until the 2mm springbars fit in
4 - enjoy
EDIT : I've used both 1.8mm and 2mm springbars and 2mm are much better !!!
1.8mm have double shoulder so the part that goes in the lug hole is much too thin ...
I made the mistake of trying to distort the last hollow link instead of filing. This first build is a cumulation of newbie mistakes
I now have a diamond 1.7mm file, much much better.
I should have asked before but you don't know what you don't know. Better though, learning through experience, and then having seniors explaining after is the best way to get knowledge
thanks everyone.
Hopefully, I am adding to this thread from a newbie modder perspective and it will help someone who is getting started