I got a bunch of work done on this mast repair.
I measured the center points of the holes - three times.
Then I drilled pilot holes and then a series of progressively larger holes.
Checked the hole alignment before enlarging the holes
Then all three holes were tapped to fit an M6 helicoil
Then a fit check to make sure the alignment is still good.
The M6 helicoil installation tool I have is broken - so I stopped at this point.
I'll grab another tool and get this repair completed.
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