I'm not sure about the truck scales back east but all the ones I've tried to use out here are not accurate on cars or small trucks
I have two 1000 lb. platform scales, wharehouse scales, both have been certified in CA and my car weighed 3200 lbs with me in it on the local Oregon state truck scales, it weighed 3450 lbs. with me in it at on the certified scales at Las Vegas drag strip, same on my scales at home
If you know a roundy round racer a lot of them have the good portable four wheel racing scales, that will you give you the corner weights and weight distribution front to rear and side to side