ORIGINAL: Bonified Wingnut
I'm not kidding. With nothing else installed I have to hang the engine out of the front of the cowl to get it to balance at the recommended range. when I start adding servos and linkages to the rear of the plane it is going to get real bad. I could move all of the servos under the cowl and add 15 more and it still wouldn't balance with the engine inside of the cowl.
Are you balancing it where I told you to?
Are your battery packs on the engine mounting block?
Don't add servos to the rear of the plane. Do as I indicated above.
Remember that 1-2oz on the tail may be the equivalent of 8-10oz+ on the noze due to the different lever moments.
Also balance the plane with the prop and spinner installed. You want everything in it to establish the C.G.