Thanks for the all the great compliments guys! It's too much fun, but in such a small space!! The slowmo is great, almost 8 minutes just toolin' around! The only thing missing from the video is the 18/36hz super low bass rumbles from the 1100rpm blades inside that dome.
Chuck, the lowered head is about as low as you can go to still achieve around +/-12.5 pitch and have ample cyclic ring in vbar setup (85). I cut the main shaft 30mm, leaves around 140mm blade to boom clearance. I haven't had a boom strike yet but I think the trubloods really help! Currently 696 blades, I'll switch to the 716's soon.