hello friends! this is my first post, although ive been reading a lot of posts here regarding leather jackets. i recently purchased one at thurston. i chose a stock aero boarder blackened brown. however, i am not sure if i need to return it and order a custom instead. i workout a bit and have minor shoulder mass. it is a little tight on the armhole. will the armholes stretch with wear? what is your opinion with the sleeve length? im worried it will shorten over time. and the jacket length? i feel like its just right but i would like to get advice from you guys. thanks!