D-5

My Dozer when going in a straight line at top speed will surge back and forth not touching the controls it is hydrostat drive , surge back an forth ,, and when pushing it does good but if I stop for a second an take off it barley takes off an then it gets up to speed , but I can pull it back in reverse and back to forward an it will take right off with no hesitation itis a 2007 lgp. Hoping someone might know about this it has 7350 hrs

D-5