On my 63 PA-24-250 there are four wing head style "Airloc 160" studs that connect the carbureator intake transition to the air filter frame. Two of the studs are missing the "wing" portion on the head and the remaining portion of the bolt is hard to turn. I have looked all over trying to find replacement for these studs - without any success.
Does anyone have a source for these studs or are there alternative fasteners that can be used at this location?
Thanks,
Bill