Sustain block....

Righto, people; my Vantage Invader has a problem. No... not that it's pointy or anything along those lines, but that the sustain block has the wang bar hole drilled and tapped at an angle, not at 90° as you'd expect. Here's a piss poor photo of the offending piece; note the string hole is straight on (ish) but that the wang bar hole dives off to the right.





So, are these measurements that I've taken familiar to anyone, ie are they a standard size:
Overall width of block - 71.94mm
width excluding wang bar overhang - 61.91mm
Overall depth of block - 42.63mm
depth of wang bar overhang - 20.07
diameter of wang bar hole - 6.09mm
diameter of string holes - 3.27mm
diameter of bridge attachment screw holes - 4.88mm
distance between string hole centres - 10.3mm
distance between bridge attachment screw holes - 21mm

Any help/guidance/suggestions gratefully considered. It goes without saying that the block is muck metal and probably can't be filled, drilled and retapped!!

Geez, that's awfully close to breaking through the side of that block.
What the hell were they thinking?

Yeah; you can't tell me they meant to do that, eh!?