I have just installed a 10oz rectangular fuel tank in my sig kadet mark II. The tank has a small bubble on the top for the vent tube to angle up to. When I install the tank it angles down a little bit because the bubble rubs on the support piece for the nose. I hesitate to notch out the support for fear that it will weaken. I was wondering if my tank angling slightly downward (10 degrees) in the back will make a big difference. Other options would be a 8oz tank or try and heat the 10oz tank and eliminate this bubble. I would appreciate any feedback .

hwflyer