Fixing my current problems with a possible spun hub at the moment...but just out of curiousity,Is there a way to slow the idle down a wee bit? It Idles fine...just I want a tad slower for Salmon trolling. I Troll with this motor now without a problem...just wondering if there is something I could adjust or tweak to slow it a little more without causing any problem? BTW what is the white plastic knob on my shift selector box? Mine is a elctric push button shifter, Evinrude 125hp<br />outboard 1972 yr model. Thanks!