So I'm hopefully. I was running the problem through my head over and over and couldnt figure out how it would run fine at higher RPM and not at lower. Just like you said pops, I think it was the gas. I started her today and it sounded 75% better and got alot of my power back. I hope through the next tank or two i'll be 100%. Must have been that sediment issue, or someone screwed up and put unleaded in the premium.