CG on Sigs ultimate fun fly?
You'd better mount every thing back--as you've said--but also know that the CG on this craft isn't as fickle as some. You will likely make ajustments to the aileron couplers e.g. spacing once or twice ---between flights before you are comfortable with the performance. The plane will fly funky until you get the ailerons right. ------ps---it's the most blinding flat spinner of any profile ( if you like FAST flat spins)