Chris, I have original gear with 3 doors.  Haven’t filmed underside of plane in flight, and many thanks for your excellent information.  On the jacks, my middle door hangs slightly open (1/4 inch) at trailing edge, but I always assumed high pressure air will push it closed at cruise.  What do you think?

Re: cg of 360-mine weighs 1125 empty.  It’s almost impossible to load outside the cg.  With me (175 lbs. and light fuel, I need a 20 lb toolbag in the back to keep it in the forward CG.  I have Superior IO360, long cowl and MT 3 blade.

PS  THANK YOU CHRIS ZAVATSON for being a goldmine.  You don’t get this service with Beechcraft of Mooney!