I just got a cg machine ,read instructions put it together put plane on location from leading edge specified by plane instructions. The problem is what reference line do you use to make sure plane is balanced? Stab level, wings level,fuse level & if so how do you get reference line on fuse. lookin for some place to use a bubble level to balance plane . Got an ultra stick on the way & want learn how to balance my old plane first.Please explaine the reference points places to put level. Or step by step how to balance a plane . PS" IM LOST!