Ok there is some news.
I reshim with the Bevel gear first, it's don't change anything.
I put out the bearing, and put them in again, one look's to be in angle, So I try again, nothing move. I have the idea my battery is dead... Damn right, I try a 11.1V and it's work proprely now
shoot fast and all.
But I hope it's not only because I have a bigger battery (other one was a 7.4V) so It's on charge now.
But a problem still, when I pull the trigger and let the gun fire in full auto (about 50 times I think) the fuse Blow up and the mosfet is hot. I have to say, I blow up my last 20A fuse in the last shimming process so I replace it with a 15A for the actual problem. I'll go afternoon take some 20A fuse and I will see. And let you inform.
Hope this time will work