Welcome to the team Mike . Finding parts for the series 80 1911 I would give Brownells a call as others have posted, also EGW and Wilson combat . I wouldn't set your build up as a series 70 takes away some of the fun . I like the series 70 has less parts , I have both . I also like to rip them down and see if I can improve it in some way , working in a machine shop you have the skills and the experience . That place would be close too heaven for me . You also could give Newmerick Armes a call . I ordered a S load of parts from them for a Springfield 1903 . There's so much you can do with the 1911 , seems it was made to work on , easy to completely strip down , they sell different spring weights to custom you pistol for certain loads , jigs to fine tune the trigger . Im sure I don't have to remind you guys when removing metal go a C H at a time . You picked a great pistol to build . Let us know how it turned out . Hope I Helped in Some Way .
Chris