I'm interested in enlarging the gas port on my 10.5" .300BLK barrel. I am installing an Suplerative Arms adjustable gas block, and want to be able to make fuller use of the adjustability of the new gas block. Please recommend a gunsmith that will bore out this for a fair price. I'm in Ypsilanti Township. I could do it my self but don't have the access to a drill press right now.