I know this has been discussed before but I wanted to share what my research has found and, also, ask for possible solutions. As noted in the past, some of us leave a trail of fuel when making a left hand turn with a full or nearly full fuel tank. Fuel goes out the vent/overflow tube on the passenger's side of the tank. While researching I checked two original tanks I have and the hole at the bottom of vent plug where the banjo bolt goes was on the passenger's side of the plug. On the tank that drains fuel through the vent tube, that hole is on the driver's side of the vent plug. Consequently, when you make a left hand turn, fuel swings to the passenger's side and out the vent tube. Were I able to use my original tank there wouldn't be a hole there for fuel to go out. I was told the supplier of the tank said this sometimes happened. So I called a vendor who happened to have four tanks in stock and was kind enough to check them. He found the holes were all over the place. Appeared to be just randomly place. No two in the same location but none of the four directly in line with the fuel when it would swing to the right. On my original tanks I don't know if Triumph was more meticulous and put them directly away from a majority of the fuel or I just got lucky with those tanks. Anyway, finally my question. It seems the only way to stop fuel from going out the vent tube would be to block it. I know other's have done this so what is the best way?