Howdy folks-
I recently got a used but "new to me" RCBS LAM 2 lube sizer. It seems well built. However, I'm having trouble with the lube plunger/piston turning inside the lube chamber when I apply pressure to get the lube to flow (see picture below). It just spins rather than grab the sides of the chamber and move downward. In fact, I'm having trouble even getting it started down the lube pressure screw into the chamber. I'm using a lube heater and the existing lube in the chamber is relatively soft although I don't know what it is.
I've got a new O ring on the way from RCBS (what great customer service!) but I was wondering if anyone had any pointers about how to get it up and running.
Thanks in advance!
Bill