Hi JWS,
For my restrictor I made one from plywood and put a single hole in the middle Maybe I blocked 30% I can glue a stick in the middle of the hole to further restrict if needed, Marvins intake is welcome but I dont have a top hatch and I use the original 5.4 liter tank and I added the dreamworks taxi tank 32 oz and left it on board I also have 2 800ml smoke tanks and it still flys light, When I placed my 4 lbs working cockpit I flew it main tank only and I wouldnt dare fly it will all tanks full, I took it out and left the Carf basic cockpit which is like 2 lbs with pilots so I can fly with 7.4 liters of fuel and 1.6 liters of smoke Ill be using this for the Philippine Hot air balloon festival in 2 weeks thanks for all the help