Hi, I'm looking for the 12 point serrated drivers used on the cylinder nuts
of an 0-320A Narrow Deck. I checked out the Autmotive Parts shops in my
local town but they only had them available in metric sizes, not the 1/2 "
and 3/8 " (I Think) needed. I have a set of Lycoming cylinder wrenches for
convensional nuts, as used on my 0-290d, and wanted to adapt them. Any
Ideas out there?? Dave.