Thanks for the heads up. I'll do that. I've been out of town all day today, so maybe I can get to finish fitting tomorrow. I forgot to mark the top tube locations the first time around, so I took the tank back apart and marked it this evening. I used a silver sharpie and marked the tank and frame where they intersected. After I bolted the tank back together I scored a line across both halves. Then I found the measurement from center to center of the top tubes and scored marks to correspond on the tank. It got too late to drill them, so I'll do that tomorrow.