I have a mechanical version of SGPP installed in my boat. I am having issues with the throttle to return all the way back to idle. I installed the return spring as suggested my perfect pass, but I had to set it really tight so that it would retrun back to idle. It worked okay but the driver has to keep pressure on the throttle lever or it will return. But now after more use, its giving me probelms again. After a pass, it will only return back to about 1500 rpms which is a problem. Ive been popping the engine hatch open and returning it by hand, but thats a PIA of course. If I keep tightening the spring, I will barely be able to push the throttle forward. So is there something else I can try? Maybe lube the mechanism?
Here is a pic of my engine, pre PP installed. I will have to get a pic with it installed later.