I have a robin hedge trimmer that I bought a few years ago but since the new season has started it....well failed to start. You can pull and pull on it till your blue in the face. New plug, air filter & fuel filter and still no luck What I have noticed is that you can fill up the fuel tank and sit the trimmer upright on the shop floor. The next morning there will be a puddle of fuel on the cement where it is sitting. It seems to be leaking out of the muffler. Literally you can pick it up and shake it and fuel will pour of out the muffler. What gives? anyone had this?