I have almost finished a GP Super Skybolt and now into the final balancing. I built per plans and sanded the heck out of the fus. knowing it was a heavy plane. I have a Magnum 120 up front. Problem is I need about a pound up front to balance it[]. Am I missing something here?? Have checked CG measurements many times, even with observers so I'm pretty confident about correct CG.

Any help and ideas would greatly be appreciated. Who knows how it will fly that heavy.

Thanks