i recently bough a lee kit for removing bulges in loaded cases, it was in 380, i also have factory crimp dies for 9mm,40.45acp. it was my thinking i could use the push through punchi the 380 kit. i do not understand the funcition of the extenction sleeve, i tried the 45acp and it just pushed the extention sleeve that comes with factory crimp die out the top. what an i doing wrong, i want to run all cal. through so they feed good in pistol. thanks cjs