[DonVoigt]

Thanks Rick for the loctite info.

Using a threaded pin, adds unnecessary complexity to an already delicate job; and increases the chance for failure- like breaking a very small hardened tap in a very small hole, leaving a near impossible removal issue.
I used a 1/16" drill bit, cut to length for the pin, since it was already hardened and should last as well or better than the material of the original block.

If you screw up a pin, as you say - drive it out and put in another; doesn't get much simpler than that.

If I could weld worth shucks, I would have welded it!

Sure there are lots of ways to skin a cat, I just like to get it fixed and move on. No need to over complicate things. JMHO.