Hi name is Matt, my first post so hello to all. I'm trying to rebuild my 1978 #17058266 carb but everything that threaded into the base plate incl. both shafts were froze beyond belief. The only part I removed successly was the secondary shaft, I cut the primary shaft into pieces to remove and after braking both air/fuel screws (used plenty of heat) then messing up the holes when I tried to drill them out. Also broke the primary throttle shaft boss from the pass. side of the base. So I pretty much need a complete and good base that would work with the rest of orig. carb. Thanks for reply