I am not seeing where weight needs to be added to this plane. Mine is about 12 lbs. The quality is about what you paid for. Wish mine were lighter too, but I can't imagine my particular Extra is so different that I didn't need to add weight to fly it. Posted before but I have an OS 160, Slimline pitts, ele sevos in the tail, rudd on pull-pull, and zero lead. Flies good but a bit heavy.