I'm working on a couple of cars that use the MRRC/Monogram Sebring Chassis. With the short wheelbase on these cars (Porsche 911S's) and the inline motor configuration, I need to add some weight to the rear of the car; about 10 gms. But, I'm having a hard time finding a good location for adding weight. There's not a lot of clearance on the underside of the car, so it's challenging to place weight there. The inside is mostly irregular surfaces, not much in the way of flat area to speak of.
Does anyone have experience adding weight to the rear of this type of chassis? If you do, then where and how did you add it? Thanks.
Audi1