6 Stop Amtech, RICO relay (Comm Instruments Relays), We have pulled the 3C, 3U, and 4U relays as leaving these relays in, in whole or in part, when picked, do not drop out the CA relay when at the associated floor. Have replaced stepper board, diode boards, and variety of relays to no avail. Any suggestions? Right now, system operating without aforementioned relays.