Holley Dp Carb Issues

1st when you run 2 power valves they need to be the same prim/secondary.

Get a vacuum gauge and go 2 inch lower than reading@ idle in gear.
If you have to, jam the PV at the spring with a small screw to keep it closed to get the Idle mixture correct to do the in gear setting.

That big of a convertor won't/shouldn't bog it down that much in gear, and will probably end up needing either regular old red cam/28-31shooter or 34-37shooter and orange cam, but hey who knows.

You just have to play with and know to tell weather you're going in the right direction, and why it worked.