I have thrown caution to the wind and did in fact purchase and apply the impermanent Blue Loctite. (Which oddly, is in a RED tube.) For this act, I was rewarded with my tightest groups yet. I fear not visitation by representatives of the Sturm, Ruger & Co., and their empty threats of voided warranty.
(@hardluk1: The Mk III 22/45 does not use a dovetail joint f/t front blade.)
All extremists should be taken out and shot.