Did the LVC get plugged in series with the cable from the ESC to receiver? If not, I can't imagine how they could get such a small device to pass as much current as the RC18 requires.
SH Z-Car, Custom Crawler, 8s Savage, 12s XTM XLB 1/7 buggy, 4wd 4-link rear/IFS Pro4 truck, Custom Hyper 10 Short Course, Belt-Drive Mammoth ST 1/8 truggy, 4s 17.5 MM Pro HPI Blitz