I have acquired a Lyman All American Comet press. It is a heavy duty(14 lb and 1" ram) C-type, uses J shell holders, and Lyman says they no longer make parts. How common are these presses? Is anyone using them and, if so, what are the pros and cons? Is it best to shop around for J-type shell holders, or just buy the converter? My press has the primer arm and small primer punch. The primer punch itself looks somewhat familiar. Could it be the same punch used on any modern Lyman presses? Should I be able to find a large punch? The primer arm may be unique to the Comet, but it is in good shape.