I just finished my Tiger 60, we had a few rainy days here, I have 15 flights so far, powered mine with a new TT PRO 61 Heli engine with a OS 40E Carb and Tuned Pipe turning a 13x4W APC at 16K on the ground (gives it a little snarl) it hovers below half throttle and verticle is out of sight, made the rudder larger+ elevator and 3D throws helps with hovering. It flies great and came out at 7lbs 8oz but I had to add 4oz in the nose to balance, I reinforced the rear fuse it looked weak and sanded (tapered) the tailfins down to reduce some weight, I bent the main gear back but it's still light on the nosewheel when low on fuel. All in all a great flier with no bad habits.