Carb rebuilt on Slant now Cam is sticking?

Just rebuilt the Carter BBD carb on my slant 66 dart. Removed everything and soaked it in carb dip can. I even removed the plastic step down cam thingy, and I cleaned it with water and a brush to get the gunk off the little steps (idle).
Reassembled it all, and now when I start the engine that little plastic stepped cam sticks in the all the way back position and the idle is 1300rpm and won't drop down unless I open the hood and push that plastic stepper down with my finger then it is fine.
So is there some sort of lube or something that I need to put in that cam so the plastic cam piece moves freely?