I am fixin to drill the holes for the engine and was wondering if it mattered if I centered it rather than having it ofset? I have a GP spacewalker and the motor is wayoff from what it is suposed to be and I was wondering if this plane would be ok? I am putting an OS 90fs on it and wanted it inverted instead of sideways. If it dont work that is fine I was just wondering. What is more important, the left to right or up to down?