I have been running a Nitro rustler 2.5 for the last 2 years with no issues other than routine maintenance. However it recently developed a curious problem...it will start just fine and run for 1 tank but after refueling and attempting to restart it immediately fowls the plug and will not start until I replace the plug and let the engine sit overnight. Not sure exactly what's going on....if anyone has any advice it would be much appreciated...if not oh well I have plenty of other toys to play with in the meantime and have been looking for and excuse convert to the 3.3 anyways...looks like I've finally got one.