And Ive even seen (Noooo, never done it myself....

) match shooters move a rear peep the wrong way 'cause the screw turned opposite their 'regular' rifle.
Yep, some guns are just wrong, and though the barrel tweak has been know to be done it does set up some stresses in the barrel that can cause some strange bullet pitching behavior as they heat up. As long as the factory will make it right, by all means get it done.