Ah well...
Tiberius...I reckon we'll just have to agree to disagree on this one.
Yep...There are people who would overtighten the grip screws. I used
to have to replace and restake bushings a lot because of that, because
over torquing the screws will not only loosen the staking, it'll strip
threads and cause the bushings to back with the screw. People like that often wring lug studs off changing a tire, too. Nothing to be done except warn them in the owner's manual, hope for the best, and fix'em when they ignore the caveat. I used to work with a guy like that. We called him
Old Gutentite. Sometimes we called him "Snap".
I'll have to stand pat with a few "IFs". IF the bushing is staked properly,
and IF the man installing the grips doesn't use torque that would sprain
a gorilla's wrist...a LHT bushing would stay put AND help to prevent
backing out with the screw when the threads get a little rusty, because
the effort required to break the threads loose would work to tighten the bushing instead of loosening it. Makes sense to me, anyway.
Speaking of LHTs...Remember the Mopars that had LHTs on the lugs
on the right side of the car? The same theory was in effect there. The turning wheels worked to tighten the lugnuts on both sides of the car
instead of tightening on one side and loosening on the other. It
worked too...I don't know if Chrysler still does this or not, since I
haven't worked at a gas station in years.
Be of good cheer and mindful of your six.
Tuner