Anybody ever mess with MTV valves?

[77 cruiser]

I'm running a shimmed TV limit & lightened gov. to get 64-6500 WO shifts. As you would guess the PT shifts are up there too. Light moderate throttle gets the 2-3 about 40+ & 3-4 60+ it would be good if I could knock them down about 10 mph.

 

[77 cruiser]

I knocked em down about 10 mph. could go a bit more, but I don't have to lift now to get OD.

 

[Mike T]

What did you to the valves?

 

[77 cruiser]

Give em each a bit more spring pressure.

 

[Mike T]

Shift valves or the MTV up shift/down shift valves?