Assembling an Ultrastick and have gotten to the step of mounting the engine. I am using a Magnum .91FS. Before I drill the mount for this engine I am wondering if these ARF's tend to come out nose or tail heavy. I only have a quarter inch to play with according to the instructions, but I would hate to add weight for a balance that might be accomplished by merely moving the engine fore or aft that quarter inch.

Thanks!