I have searched around some but didn't find my answer. I am to the point of installing the fuel tank and engine along with the cowl on the Lancair. I bought a GP Easy Fueler Valve but I'm not sure now that that will work well. I am using an OS 61FX and the Top Flight in cowl muffler like the instructions describe. I don't see how I can tell when the fuel tank gets full since the vent to the muffler will not be disconnected as is typically done for an overflow. I currently have a two line setup to the fuel tank. I would much appreciate some guidance on how best to make the fuel system work well.

Thanks
Richard