I'm attempting to program the FL4 decoder before mounting it in a loco. I'm using DecoderPro and Sprog3 and am able to set the lighting effect on each function without issue. However, the functions only work when the function is set to both directions or forward direction. When I put a function into reverse direction, it will not light up at all regardless of the direction set on the throttle. Separately, I'm testing a Loksound Micro Select and don't have any issues with direction. Any suggestions on things I can try for the FL4? Thanks!