Idle Rpm High in Park, Low in Drive

You gents are great!

It’s now my work week but I’ll try plugging away at her and get updates.

The rollers are Jegs 350 1.6 ratio.

The front cover is post 70 with the serpentine belt setup. There is timing pointer off the front cover that reads a tdc and 5 ticks above and below, but the crank damper itself doesn’t appear to have any timing marks. *edit*
A closer look and the damper has some timing marks that are very difficult to make out as they have been painted over. Looks like it ranges 0-30 but very hard to see and didn’t show with my timing light...

Thanks so far!