yes i have it mounted in my nobler but i made a stand that holds the whole plane up side down so the engine is up right, yes i have a filter it's clean, fuel lines good, tested it and the filter,it has a plastic gas tank it's good, spray bars fine, lets put it this way it's getting gas in the engine, because some times i have nitro run out of the muffler! to rich when that happens! but i even tried to crank it with only two truns out and then one turn out! i know that's way to lean right? but it still would not start[&o] and yes the back plate is on nice and tight.