If you're toed out or in, bumps and imperfections will pull the car. My 66 had similar symptoms, till I got the alignment fixed (toed out by over an inch!).
How are your front tires wearing? This might provide clues.
DanM
66 Coupe, check her out at http://www.66CoupeNW.stangnet.com
"Imagination is more important than knowledge. It is a miracle that curiosity survives formal education" - Albert Einstein
How are your front tires wearing? This might provide clues.
DanM
66 Coupe, check her out at http://www.66CoupeNW.stangnet.com
"Imagination is more important than knowledge. It is a miracle that curiosity survives formal education" - Albert Einstein