Mine weighs 3 lb 8 oz with Saito 72 and 2 oz tail weight. I also have the DuBro FG fun fly LG which aren't all that light either. I didn't drill any extra holes but I used all contest balsa. Transparent Monokote, HS225MG's, HS81 on throttle, 5 x 1000 mah NiMH. The engine is definitely too much for the plane at this weight as it accelerates vertical like a rocket! I could get away with a smaller engine, get rid of the tail weight, and come in at right around 3 lb. I think even a 32 2-stroke would hover the plane at that weight.