Ported or manifold vac for overdrive bypass vac switch?

No, just the one tab per switch. Maybe Trailbeast didn't see that pic of the top of the switches.

So when it kicks down to 2nd, it also disconnects the lock up and over drive all at the same time. The vac switch controls coming out of overdrive and lock up at lighter throttle that is not enough to kick down to second but cutting power to the circuit.