Originally Posted by Cridd

I have a few b5 3 gear diffs. On one of them I can't get the diff screw tight enough so that the one tire spins one revolution or less. After it bottoms out and feels normal I spin one wheel and it spins much more then the other two cars. I pulled it out and put in a all new diff, new screw, spring and thrust and have same issue. It feels fine on the track but does not put me in my happy place when it is on the bench and I spin it and then spin the others. I cant spin one tire when holding spur and other tire so that tells me it is fine....is it just a free spinning car and let it be or should I look at anything else.