Well I think I may have just changed the angle enough to prevent it from seating. I looked at it again yesterday under my "big eye" (lighted magnifying glass) and could see with a smear of blueing, that the actual tip of the stem was bottoming out before the sides that seat were.
While I had lapped it the compound had only polished up the seating portion of the stem and not actually cut into the seating plug to match. I cut the angle of the stem point back a touch with a drill and some emery cloth and relapped it yesterday afternoon. I didn't get a chance to try it out as the sweetie called me in for an awesome sirloin steak dinner which pretty much ended whatever consciousness I had going for me shortly there after.
I'll be working on it a bit more sometime later this week but from the blueing I did on it yesterday, it appears that I have a MUCH better contact than I did before. We'll see......