My Evinrude Lightwin 3 hp purrs like a kitten, I never change any settings and get a smooth run every time. Last week I took my dad fishing in my 10' jon and at wot it seemed slow and boggy , I turned the low speed knob out half a turn and it ran a little faster than usaul and sounded to rev higher. Got it out today and it ran like it always had so I turn the knob back to where it was and it purred like a kitten. The only theroy I have is my dad is about 265 lbs. and the front end of boat was a bit lower than the back, so would that cause a difference in preformance ? I don't remember that happening last year when we went out. I'm 99.9% sure I used my mixed gas, but would straight gas cause that type of problem ? Any way, it's running fine now as it did before , just been bugging me. -Thanks
