If you've built the car and can't move the weight there is not much you can do now but if your still working on the sub assembly
Look at "ask the pros" board for subject new car body.... That will give you an idea of what the body... Bare... Should weigh
Check your COM also ... If you have 35g on the DFW.... If your body is down around 15g ... bare ....then I'd say your COM is over 1" ... That is less than optimal