Old thread but giving it a try. Just test flew my groovy (had it for about 6months but an EF extra borrowed the ys-63). Thought it went pretty well, but didn't really get a chance to really test it out. Anybody stick to the stock elevator pushrod? I did was never very happy with it. Tried to pull a parachute and the fookin thing snapped 90deg. Not sure if it was me or the elev setup(I'll blame that until i change it) but overall as a chuckaround I was pleasantly surprised. Compared to the Extra i found it a lot more stable in the wind(that'll be the weight) but the ys pulls like stink. Will keep me going till I get the AW extra 260 50cc ready. Now that is an experience in ARTF!! the way it should be..