Just got my Twist last week, and got it in the air this weekend. Really nice easy build, hard to beleive how much was already done for you. I have an OS 46FX in it. I have an 1100 mah battery (for weight) all the way up to the gas tank, and the receiver behind it. I had to add 5oz. to the nose to get CG around 4-1/2 to 4-3/4 or so. The plane however flew very well, but I see now that I could have probably avoided the weight on the nose, by putting the battery under the gas tank (maybe). Probably not a big deal now but man does this plane fly great!! I had been flying a Tiger II, and really like this plane better. For now I have an 11X7 APC prop and this seems good for now. On take off the plane seems to want to roll out a bit to one side??? Is this a thrust angle problem? Not really bad, but not straight out level take offs either. Landings however are really nice, but the Club has a black top runway so I gotta get use to the tail dragger, and eliminate that slight bounce. Ground control is a bit different as well. Any suggestions on prop choices would be appreciated. I am just a middle of the road flyer, looking to advance at some point with expirience. I had a bit of trouble seeing that purple wing bottom so added some bright yellow stripes to the underside of the wing, and man that can be seen real well aganist that purple. All I can say is for the price, this is one real nice plane, and anyone that has been flying a decent alerion trainer could fly this on low rates.