After reading Mike Smith's post on Sonex Builder's Net (http://sonexbuilders.net/viewtopic.php?f=7&t=3850&p=29348&hilit=time+serts#p29348) and recalling my own life experiences with aluminum thread galling on motorcycles, I concluded that adding Time-Sert thread inserts to the AeroVee would be inexpensive and prudent. Removed right side head, cut and installed Time-Sert 42123 M12 X 1.25 X 15.0 SP TIME-SERT (WASHER SEAT) from Thread Kits Company (https://www.threadkits.com/catalogsearch/result/?q=42123&cat=) using a liberal amount of WD-40 to lubricate and flush cuttings. Thanks to Mike Smith (mike.smith208@comcast.net) for the loan of his installation tool!