The tank in the upright position will not work. The engine will flood at the beginning of the tank and it was go lean at the end. I used the same engine mount screwed to a piece of cabinet grade plywood, just cause I had it laying around, and use a fuel tank from an HPI savage. The tank has a primer built in which is a godsend for a poorly running engine. replace the fuel tank or mount it on it's side and you should be good to go. I have mounted from a os 50sx 2 stroke to a saito 120 4 stroke without any problems. Just make sure with the larger engines that the table is properly secured, my saito 120 at full throttle would drag the table that I have the test stand clamped to. ALWAYS wear goggles when you are test running an engne since you are never sure what will happen!

Chris

Chris