Hi everyone. I'm new to the forum. I have a 1973 Commando 750 that I'm restoring. I used the Tri-Spark Classic Twin ignition system and it works great. Converted to single Mikuni carb. Also great. My question concerns spark plug inserts. When I removed the plugs an insert came out with one of the plugs. It is not a helicoil. It is a sleeve threaded on both ID and OD. The other side has the same thing (but it stayed in). Can I put some sort of locktite or other compound on the threads and reinsert it in the plug hole? Any suggestions? Thanks