I finally got some time to tune the carb today and what I ended up was 32 degrees of timing in N and also 32 in D (foot on the brake). I got 15"hg in N and 12"hg in D. I had to turn up the in D idle rpms just a tad to get the 12"hg but the vacuum and the idle are rock solid.
It still likes the A/F in D around 13.5. Once I approach 14.0 in D, the engine just starts to shake allot.