I just listed a nice set of electrocaft servos from my low hour SMB-1 in the classifieds section. The tape drive finally died on the machine and I really needed to add a 4th axis to this machine, so I bit the bullet and am in the middle of a retrofit. I also have the full set of servomate boards/relays and rest of the control available if anyone is interested. This is a 1986 BX control 3 axis machine with the servomate amps. Please send a PM if interested.