My kids have recently taken to running their 3s BLX trucks (Big Rock and Typhon) in tje novice class at the local track. It's kind of a pain for them to open up the receiver box and plug in the loaner transponders and then restuff the wires etc. They are only running on 2s. Is the fan needed at this voltage? If not, it would be much easier to unplug the fan and then plug in the transponder to this (already accessible) port.