I would not loctite it! Take a good look at how it really works.It balances between little springs,kind of free floats on spring pressure.Maybe if one continuously goes right out of sync new springs could help????
You should try syncin flatslides,A real bitch compared to stock carbs.Jet and needle changes are stupid easy though.
The synch screws have springs holding pressure on the screw. Almost the same principal of a spring washer doesnt need loctite.
Maybe someone is messing with your carbs while your sleeping. LOL! :stickyman: