HI,just after setting up the matchboxs, both LEDS where flashing red, so I plugged them directly into the 9000 and they where a content red, like they should be. After reading your post, I went back to the kingcat and plugged them back into the IC4 isolator and they are a constent red and all the controls work great, very low draw on the servos , I might add also.
Maybe setting the match boxs up, made them flash ?
Rcpete