I just started building mine. I have completed the stab, elevator, vertical fin, rudder, and both top and bottom center sections. So far so good. Good quality balsa and die cuting. I have read that some folks think that the top wing is set to high but plan on leaving it as designed to improve flight stability. I am putting a Magnum 91 4 stk in mine. I was not very fond of the sheeting termination at the trailing edges on the top and bottom center sections but completed per design. I am a slow builder so this probably be a 1 year project for me.

Good luck!