Thanks guys, it's been quite a journey thus far.
I have learned a lot, not only about the Abrams but about myself and my modeling skills or in some cases lack there of.
Also when modeling in 1/16" scale even the smallest detail is necessary.
It has taught me more than I ever knew about soldering and how best to handle multi-piece assemblies.
I have built several dozen holding fixtures to position and hold pieces while I soldered and or drilled them and some of these fixtures are elaborate assemblies themselves.
Holding fixture for assembly of exhaust grills.
I have also learned patience, lots of patience! I know now that if I need 30 of something to make 32 or 33 just because "stuff happens" and if I have more then I need then the frustration factor drops substantially. The "twang" does not mean an immediate "Oh crap" and if it does then just take a deep breath and simply make another.
The build is down to the small details with all the heavy work done. I have one large hurtle to jump and that is replacing all the molded weld beads that were removed and there are more than I like to think about!