I used a TT 46 pro in mine. I just used the clamps for mounting my engine. I have about 50 flights on mine so far. I have not made a single mod or replaced anything. My plane has flown great and I have had no problems. Actually come to think of it I made one mod. I put 3 steel bolts in my landing gear. I did this after it almost feel off on the maiden. My landing gear came loose in flight. One bolt left the gear completly the other was about 3 turns into the blind nut. I landed the plane without incident even though the landing gear was 90 degrees from where it should have been. Remember to locktite the mount in and to locktite the gear bolts in. Other than that enjoy, this plane flies great.
James