and canted (not square to the base plate).... did they get anything right about it?
but seriously, why not turn and redrill the offending holes? worst case is you'd put copper on the back, weld up past the top of the metal, grind flat, then redrill the holes....
but seriously, why not turn and redrill the offending holes? worst case is you'd put copper on the back, weld up past the top of the metal, grind flat, then redrill the holes....