I was recently given a Star Luber-Sizer in excellent condition set up with .451 die and top punch which is the primary caliber that I cast and Load. The piston screw was all the way in so I'm assuming the lube resevoir is empty. How do I get the piston out to put lube in it appears to be stuck all the way down. Could the spring be missing?http://castboolits.gunloads.com/imag...s/icon_cry.gif