I have to give the Tower Hobbies .46 two thumbs up. I bought mine in the late nineties and I was just about ready to throw it in the trash until all of a sudden, like someone flipped a switch, it just started to scream. Has run perfectly since and is a real powerhouse. I do understand, however, that it is a crap shoot. Some of them, according to their owners, never seem to run right. Maybe they need to plug it in to a gallon of fuel and just let it scream until it either quits or runs well.