after some failed trials, I decided to write here to asking help to the expert users about how re assembly the 7Axx case.
Just an introduction: I'm not an expert, I for sure don't believe my jobs are comparable with watchmakers results, for me it's just an hobby that sometimes makes me satisfied and sometimes makes me angry
.The topic is, what's the best way to assembly a 7A38 case, tips and tricks that can increase the probability to make a good job.
In my last jobs I had big problems assembling the glass and bezel using the old gaskets (when it's impossible find the original or the replacement on Cousins). Especially about the bezel... I find it very hard to assembly.
My questions are:
- where it's preferable put the gasket (properly lubricated): on the case or on the bezel? The last I assembled was putted in the bezel but maybe it was just a fluke
- when I have to assembly the glass: before the bezel installation or after? I usually assembled glass as last part, but maybe assembling it before can increase the surface for press die reducing the "tilting"issue during pressing the bezel in the case?
- how pre assembly the part? Often it's very hard to guarantee any angular misalignment between parts, can the gap from parts regain the correct position? Sometimes I think the chamfer for help the assembly it's too small, it's seems inexistent...
Almost same questions I think still valid for the crystal installation.
I have just bought a new press from cousins, it's the screw version:
https://www.cousinsuk.com/product/screw ... ode=C41040, I hope it can helps me in the future
.Thank very much for anyone could help me, I appreciate very much any kind of help and please be patient for my basic questions and issue
). I posted mi WIP job also here 
I had decided to fit a NOS bezel, to improve its appearance, but forgot how tricky this case was to reassemble. To get it right, you need to perfectly align the elliptical bezel with the case (and the dummy rivets with the 'peaks' on the sides of the case / lug gaps). It uses a slightly shallower gasket than most, Seiko p/n 86179051. I had one in my stock. Normally, when re-using the old gasket, in this application, I would fit it to bezel, rather than inside the case flange. Tried that, damaged it. 
Once you've even slightly distorted one of these gaskets, you can forget it. Bought two more from Cousins @ £8 each. 
Damaged one of those, trying to press the bezel home. 
So now I'm probably going to investigate alternative gaskets.