I have a protroll 2 on a 9.9 Yamaha. Lately it's been screwing up and I'm wondering if anyone else has seen similar condition. After running 5 or 6 hours with no problem, the motor will suddenly speed up by it's self without touching the speed knob. Then the knob wont change the speed when you turn it, until you turn the unit off and back on again. I'm running off the big boat gas tank not the small tank and hose that came with the motor. Wondering if the servo motor is getting too hot or maybe the controller unit is getting too hot from sitting in the sun on the dash board. Or maybe fuel flow from running on a half full large gas tank is messing things up.
Any opinions ? Pro troll is new this year and Yamaha is only 1 year old. Motor runs fine with manual throttle so I think it's the pro troll messing up.