Adding a wet kit

Bought a used wet kit, over the weekend and decided to mount it. Put the PTO on with one thick shim. Took the air slide and fork plate off, to check for any binding. The collar slid smoothly from “engaged” to “disengaged” and bolted the cover back on. When disengaged, I can turn the gear by hand and when engaged, it’s firmly locked. When I start the truck with it disengaged, it turns but a lot slower than when it’s engaged and I can bring it to a stop with a pair of pliers. Is it normal or ok for it to turn like this and when I put the pump on is there enough resistance to not allow it to turn?

 

I do have two thin shims but the former truck was a 13 speed(I know that prolly doesn’t matter) and only used one thick shim, so that’s what I started with. I put the thick one on and could feel a little play in the pto gear so it wasn’t in a bind. While truck is running I engaged and disengaged the pto, no grinding and ran quietly.

 

I guess “lower” and “tip” are the 2 lines that go to the pump? On the pump which air line port, is which?