Posted this in the Q&A but it's not getting any hits, maybe it will do better here...

A couple years ago I installed a Turbo Action manual/automatic valvebody(#17676). Manual upshifts are quick and firm but in "D" the automatic upshifts are way too early and soft. The KD lever is all the way back @ WOT as per the Turbo Action installation instructions. IIRC my trans core is from a '68 300 so I'm speculating that the stock governor weights aren't optimized for my current combo. So here's the questions...

Exactly how does the governor work?

Do the governor weights affect part throttle shift points or just WOT?

A&A and CRT offer governor kits in 200 rpm increments, what would be good for a street driven, .509 cammed - 4.10 geared B-Body?

Can the weights be replaced by removing the extension housing or does the complete governor assembly need to be removed from the tailshaft (as shown in the FSM)? It looks pretty simple but the FSM doesn't give much detail.

Thanks in advance for any and all responses