Jimmy I had my motor rebuilt. I have run 2 gallons of mercury oil thru my 260. The first 40 gallons of gas and 25% mixed oil was between 4,000 and 5,000 rpm. The last 10 gallons was between 4,000 and 6.250 rpms. The builder of the motor raised the enrichment from 96 to 103 in the CPU during...