Just been to Byron Bay to flight test my old trainer now owned by JC after a lot of alterations. O'l mate didn't have a string line when he assembled the blades so he spun them up with loose bolts and them tightened them. The results were AK blades with absolutaly zero shake. Possibly the smoothest blades I've ever flown! I've advised a few other alterations. Across the strip were 'meat balls' (Tandem skydivers) constantly dropping from a Cesna Caravan with the aircraft not even turning off engine for the next load. I think Tandem skydiving has become a lucrative business.