Thanks, all. the Fuel tank that came with from ESM is what I used - 27 ounce. Reworked the opening a bit to use a Dubro gas-proof stopper and cover. I used this tank because it fit in the narrow opening in the servo tray, of course, and according to Saito's gas consumption specs, I can run full open for 20 minutes with 27 ounces gas. That's way longer than I ever fly. Prop is Xoar 24x10 which turned 5900 rpm on the ground. The ignition box is against the bulkhead and fuselage in front of the gas tank, on the top side, held in with Velcro on two sides. That keeps it out of the way of any gas that might leak out to the bottom of the fuselage (not too likely, but could happen), plus I needed to run the plug wires out the top half of the firewall over the engine. The model less gas is 34.25 pounds. So, with gas I'd say an even 35 pounds. Think that answers all the questions. Still haven't seen any pics or movies come my way, yet.