I've been flying this plane about a year now. Its very touchy taxing on takeoff and landing. My CG was just slightly nose heavey when first built and it wanted to drop hard when landing, I ripped out one of the retracts before I corrected the CG. I also had to raise the fuel tank to get engine to run right. I put an OS 46 FX in mine (needs just a little more power) I plan to upgrade to a four stroke 70 soon. The plane looks great in the air. Have fun......