I bought a very casual/stylish blazer that I like very much. However, it has a working button sleeve. From reading past archives, I understand that the sleeve length can be adjusted at the shoulder. But I would rather not have a big operation done on it since it cost alot and I don't know of good tailors around my area (Manchester) so I'm just wondering if the working button sleeve can be turned into a non-working button sleeve. I don't need the sleeve to be working, all I need is it to be shortened so that it doesn't look too obvious that I had it altered. (But 3 buttons will have to come off since I need to sleeve to be 2.5" shorter)?