When the wing came off my sport plane, I attempted to use my tower 46 as a plow in an open field. Sorry to say it didn't even work as well as when I mow the grass with it. Took it apart, cleaned it, put it back together and it runs, but at 1/2 throttle it acts like WOT, at WOT it dies. Think it may have something to do with the needle inside the carb throttle arm. Any of you gearheads got any ideas? BTW I don't have owners manual & don't know if it would help anyway. :bananahea