I have had Aura Sky 100s with MK Professional Lite blades for a little over a month now, and I've noticed a sharp popping sound when I land jumps. The sound itself is almost like an echo-ey clucking of the tongue. It has become more consistent and louder with time (enough to be heard over music). This only happens on my landing leg (right), and it doesn't seem to affect my performance. The blade is not loose and as far as I'm concerned was mounted properly. The only real problem is the sound, which is certainly becoming disconcerting. Does anyone happen to have any ideas about the origin of the "pop"?