It came from my old CG machine weighs 1-2 grams not going to effect anything that drasticlly but if it were any heavier then it might be an issue. Like I said you are looking to get it in the ball park +/- 1/4" will still allow you to flywithout crashing. Check your local HWstore for a plastic line level and remove the tube with the bubble and then CA it to a thin piece of plastic or ply.