Thanks for the tips fellow flyers, I will put them to use....I plan on flying once or twice a week, so I'll drain the tank after each time out. By the way, I'm using SIG 15 % nitro, 20 % oil, (half castor and half synthetic) is this a quality fuel?? The old gentleman at the hobby shop I buy from, recommends this fuel that he says has a good track record. Thanks.