So far, the '79 has not required any machining. The Hunley did, however. Things like one unobtainium pivot thrust washer that a PO left out. the existing one seems to be phenolic, and since I don;t have a piece that big, I made one of brass. The belt idlers were seriously rusted, so I made new ones with bearings, the original pivot, a nyloc nut holding the bearing on a bolt machined down to fit the pivot arm.
Yesterday I made new hinge pins for the shelter sides on tge '79 out of 80mm x 5mm screws by drilling holes for tiny pins and trimming their length. I just have the smallest HF tools, but they really help.
So, the carb problem on #2 cylinder fouling pkugs on Hunley was finally tracked down to a wallowed-out needle jet. I had spare good ones from a junker '79 so that is fixed, tested, and I'm real happy with it.
'79 carbs in place and rewired with stock ignition. Finally got stock headers on it so the mufglers would mount and rolled it out. Fired right up and even though just static timed and carbs not balanced, it sounded real good! Went ahead and registered it, but still need to finish forks and rebuild front brake system before riding. I hate working on brakes.