The reference to your cart was a joke, a bad one , but still a joke. Anyways if its only 4 months old take it back to your dealer or call mich direct. Ask for Steve in the tech dept and explain whats going on. Personaly i would call mich, they are very good and will sort it out for you, without having to wait for your dealer to get his bum in gear. Even if your cart was tracking at 5gms it wouldnt stop the motor/platter spinning. If you havnt got any scales then buy some. I would hazard a guess that the scale on your arm is a mile out, and in this game 0.2 of a gram is a mile with some carts. Digital scales are brilliant if a tad pricey.