Has anyone built one of the above aircraft & incurred engine problems?? The engine needs to be inverted but we fear that the tank may be at the wrong height. We are using an O$ 46LA but after my partner spent a week kindly assembling this beastie, installed the engine ect & then down to the flying field, the gremlins appeared.... Cowl on,engine starts & then stops ect so the cowl then removed, still probs..agghhh! If anyone has any advice, truly appreciated also if any info regarding how this aircraft flies ( when the gremlins are course! )..Many thanks, Sara.