Why so complicated? Just change the way you connect Central Box/PowerBox and receivers.
With CB200 and receivers we can easily hook up more than 15 servos.
You have 24 channels with Jeti radio system, use them.
1) change 2nd receiver to something like R7-9-12
2) connect only signal wire from SAT2 CB200 port to the 2nd Rx (Disconnect Power, pos. and neg.)
3) connect power ONLY (disconnect signal wire) from any of the servo ports (15 on CB200) to the any open port on R7-12
4) assign channels to any CB200 and receiver ports
This way power for 2nd Rx and servos connected to it is coming from CB200 stabilized and telemetry (Signal wire)
Signal is coming from CB200 SAT 2 port, Power from port 15 (+/- wire)
If you connect servos directly to the receiver without providing power from CB200 you WILL Burn out the power supply on SAT port.
Zb/Jeti USA
A diagram may be helpful.
kkn if you are using Electrons and already have the G200 controller you are set. If you don't have the controller I would use the sequencer in the radio.