I have an old RCBS Mod A, normally don't use it. I'm forming 1600 cases up for ground squirrels on my A3 . I need a second press set up for another operation. Problem is the shell holder wire spring clip doesn't hold the shell holder on the Mod A, wants to keep turning. Does anyone know of a source for those wire spring clips. RCBS doesn't have them or that's what the person I talked to said. Maybe another press Mfg would fit?? Appreciate any suggestions.