While in the process of adjusting the float level, I believe I found the reason they were set too high. The needle had worn a notch in the brass tab that pushes against it (the needle valve) to stop the gas flow. I have bent the tab to compensate for the wear, and put the floats at the proper level, but I'm wondering if that notch can be repaired in some way? And does anyone know where parts for this float system can be had?