I have a new Colt XSE and want to install a beavertail grip safety. I have called all my local gun shops and 2 of them refuse to do that type of work. They say 1911's are too difficult to work on and the best that they can do is send it off. One gunshop wants 30.00, one wants 35.00, and one wants 65.00, to change the grip safety. How difficult of a job is this and what is reasonable to expect to pay? I am thinking of a Wilson's drop in to minimize the amount of work. I'd like to do it myself, but don't want to screw things up. I haven't touched a 1911 in years and am unfamiliar with the inner workings. Obviously, Id like to go with the cheaper guy, but have been warned by one gunshop to send the Colt to a 1911 "specialist".