Been raining here which is making doing the welding work that needs to get done tough. It's OK. The truck is running "really" good at this point, and everything works, so all the rest is "mostly" cosmetic.
Hula was installed...
I also pulled apart my vacuum regulator to see how it works.
This side of the orange piece is connected to the throttle. When you step on the throttle it turns.
The amount of vacuum is controlled by that black piece of plastic on the other side that is lowered and raised by the position of the throttle. As the orange disc turns counter clockwise it raises and lowers that thin black piece of plastic which is spring loaded and attached by a small cable going up into the valve above.
The bottom hose connects to your vaccum pump and gets about 25 Hg of vacuum. As you push the throttle the amount of vacuum decreases to the top hose which is connected to your transmission. I think if you put a special .676in block on your throttle seat, and twist the throttle to exactly that depth, there should be only 8 Hg in the optimal scenario.
My regulator wouldn't hold vacuum so it needs to be replaced. I tried spraying some silicone into the valve, and it helped a little but the valve is pinned together and it seems like if I try to unbend the spots that keep the valve together they will either break or I won't get the valve back together tight enough.