When should I start worrying about the CG. The turbine is mounted on the Roo. I need to place the ECU, pump, propane system, and batteries. The bat's will be placed for the final CG. Do I start now or wait until after glassing and painting. Im not sure just how much glass and paint effect things. The Roo is notorious for being nose heavy with such a light turbine. I made the fins out of solid balsa to add a bit of weight in the rear. I never use nonfunctional weight for balance. Bkf