Originally Posted by
xenologer
and most shops don't know about brake mount facing because it's an expensive specialized toolset, and nowadays when things go wrong the reaction is to warranty replace stuff instead of fix it... no more skilled labor
A decent shop should know about it, but why do it? for an issue like this, it's poor/defective manufacturing, and is a warranty issue for the manufacture, their problem, not the shops.
For anything, if it has a warranty, why wouldn't you use it????, fixing items is for after the warranty expires, not if the item has one.