One thing I found was a break caliper sticking,thats one thing that took me a while to find. Make sure your car rolls easy,and free. Line locks and a sticky break caliper,will for a fact make 60's jump all over the place. Theres always 100's of reason,and it turns out to be ONE that someone on this site will have had. LOTS of good information on this sight and I thank you all for it.
