Hi Dan, Yes I think flipping the 8 pin connector might work for some MFU's but not for the Clark board. If you look on the Clark Instructions it shows you the pin identification numbering relative to the socket on the board and the orientation slots. This is back to front when installing in (some) HL tanks and you do need to re-pin. If you consider this, together with the additional wire that needs to be added and the 2.2ohm load resistors, it can get confusing and it's easy to mis-wire. I'm on my 5th tank now with this problem. I will persevere with the Clark board though as once set-up, it is a major improvement. I've managed to fit a relay that switches on the smoker from the TX and also a movable MG via a TX controlled servo, so the clark board does open the use of other features which is nice.
Cheers
CaptB