The GE35 are different in both voltage and protocol.
I thought about trying to write new firmware for the SSC to drive these, but then the GE35 needs 5 volts rather than the 12 used by the SS. Tapping off of the 7805 in the SSC would not work due to heat and capacity limitations which means the addition of something external to the SSC. All to say this is getting too messy for my liking so instead I'm looking at the E681 controller from SANDEVICES, LLC.
RM