You cut them off when you have a barrel that won't shoot worth spit with them on. Changed my .45 from a rifle that didn't shoot very well at all to one that provides excellent accuracy. And yes, it do indeed have to do with accuracy when your QLA section is off center with the bore.

David White probably gets all of the QLA removal work he wants! I've yet to read anyone report anything but improved accuracy after one of his jobs is completed.

Redhawk1 over at Graybeard's has a new ProHunter Encore. You might go over and ask him if the differences are worthy of the extra cost.