Incline parking and converter drainage

CudaFactHackJob said
The TransGo shift kit is good for their new manual valve that allows the converter to charge in PARK. It's not perfect; the fluid level might still be a little bit higher in PARK than NEUTRAL; like half an inch.

When I rebuilt the 47re in my diesel I put in the two aftermarket
Valves from Sonnax. These charge the converter full time in park.