The die can be disassembled for cleaning, it is likely that there is some little piece of something in the die that is making it stick. To disassemble the die, screw the die into your press. Then using a short length of 1/2 inch hardwood dowel and a metal hammer drive the collet straight down out of the bottom of the die body. After you have cleaned and lubed the collet and die body, use your press to push the collet back into the die body. Screw the die body into your press as far as it will go and then put the collet on the shell holder and raise the collet to contact with the die body. Then slowly push down on the press lever with steadily increasing pressure until you hear the collet snap into position in the body.
