Arduboat Only manual throttle in Automode

I have been working on getting our Fishing club’s arduboat all dialed in. I am working on getting the steering straight, but I am running into a odd problem. When I put the boat into Automode, the rudders move like it’s unting for the waypoint as it should… however, there is no throttle. The only way I can get the motors to run, is to manually move the stick on the RC transmitter. The throttles respond perfectly to to the transmitter, while the rest of the system is working in Auto Mode.

Any suggestions as to what may be wrong??