Flew mine Sunday.. Awesome is all I can say. No trim needed and no weight had to be added to balance it and it came in at 17 lbs..One thing I was needing to know is it ran for a wile on the ground fine then got to were it would just die as if it was getting hot or starving for fuel..Pulled cowl checked carb setting and run great without the cowl and may I say one more time it flew as if it was on rails and landed like a trainer..The engine is a Q52 and the head is wright in front of the vents but is it a nuff or dose the carb need to breath outside air or could it be vapor locked.. Thanks Todd

I cut quite a large square hole in thye bottom of my cowl. Exit area needs to be twice as big as inlets for proper ventilation. Sounds like your problem. With the DA-50 mine is 18lbs but I'm also running Duralite Plus batts.