Well, so far, so good. Initial test run shows no weird issues or apparent manifold leaks.

Main jets look OK.
Needles look OK.
Pilot screws need to richen up a bit.

Since the last dyno run I've made the following changes:

Tuned for Non-E gas (downsized mains)
Optimized the slide springs
Optimized the throttle plate air bleeds
Installed modded V-stacks
Plugged ACV
Installed BC manifolds
Light clean up of head intake casting

More changes than I normally make between runs. Oils well that ends well. Nyuk-nyuk-nyuk...