Hello - New boy here..........Just built a Nijhuis Spitfire -the freebe that came with the mag -and have fitted a 370 motor with gearbox. Fully rigged and with an 8 cell Ni battery fitted, I need 1.5 lbs of ballast to get the c of g in the right place. Any polite suggestions appreciated.! My profile : Ex RAF techie mostly choppers and Vulcans. Lapsed PPL- built and flew my home built KR2 until incompetence and the wife persuaded me to sell her( KR2 not wife). Started RC as a substitute but haven't flown yet. Have completed a Focker Eindeker and the freebe Hunter but haven't the bottle to unleash these potential missiles on the unsuspecting public!