while the earlier Lee molds had the handles secured with screws that could be removed, for the past many years, Lee has been using pins that cannot be removed without modification. You will have to drill a hole in the mold on the opposite side that the pin goes in and drive it out with a drift. I also am pretty sure that the pins are smaller than the screws used in most other brand molds so you would have to drill larger holes in the handles.
I think you would be better to buy a second hand set of Lyman molds with handles in a gun show and with a bit of luck you can find them for $20 or so
cheers mooncoon