OK I have an extended cab XLT 1986 vintage. I just installed a set of Explorer seats in it and it was at that time I noticed it. I put my seat tracks off the original seats on the explorer seats. The drivers side seat has only about 4 inches of movement forward. This limited movement wont allow anyone to get in the back from the drivers side. Is this normal movement or do I need a new seat track? Passenger side is ok plenty of room for the biggest of people to get in it.