Flew mine first time on one of the last C5-3s I had stashed away. I angled the rod too much and it had a downward ejection. The booster flew farther than the orbiter. I also did not sand down the dowels enough and the engine pod caught a little, causing the booster BT to flex and strip off a line of paint over the spiral. Have flown it on a C6-3 and it's nice. I overpainted mine so the glide times are not phenomenal, but stability on boost doesn't seem to be an issue. Sure hope Mike gets his kits back into production; the upscale looks to be a beauty.