Okie dokie. From a post I saw a guy left his house while charging lipos and came back with firefighters at his house 0_o. Okay I understand how to balance the motors and propellers but I don't understand the motor shaft and propeller hub hole sizes. Does the hub hole and motor shaft have to be the same size or one bigger than the other? The motors i'm gonna get have a 3mm shaft, and the gemfan propellers have a 5mm hub hole. Will the propellers hub holes fit on the motor shafts perfectly? I don't wanna have to drill the hole bigger or buy special adapters. Thanks again!!