I'm planning on buying a couple new suits in the next few months. I don't have much experience with suits, I only own one, and I'm probably going to go with a couple nice OTR ones that I can get a good price on. Most likely I'm going to have to get them altered and I'm curious about what can or cannot be altered. On the suit jacket and pants: 1) What alterations are made pretty easily? 2) What alterations are possible but tricky? 3) What alterations are pretty much impossible? Thanks for all your help.