2006 Optimax 225 serial # 1B275156.
After running on plane, boat runs fine, idles fine, but when put in Neutral revves up to where I shouldn't put it in gear. Doesn't do it every time, shutting the engine off and back on usually fixes it. I checked the hot foot, and cable, and did not notice anything off. Other threads seem to point to the TPS sensor, why would it only act weird in Neutral? Would love some thoughts, and help getting the correct part numbers.
Thanks