Seat wont' slide back all the way
 

Has anyone had this problem before?? Both seats hit a hard stop before going all the way back. I'm 5'-10" and it barely goes back far enough for me to drive. I have another pair of seats that do slide all the way back. The car is a 1972 and the seats are from a later model that have a wire sticking out of the bottom, but fit the rails just fine. I removed the seat rails and the rails by themselves slide back all the way...when I bolted them on the seat it stops ~ 2/3 way back. :confused:
Thanks for any help you can provide.

your seats
 

are they stuck when lifting lever to retract?
had this problem and the lever in the rail is not up high enough to slide----with a flashlight look at the left side rail and stick a screwdriver in to release the arm---a little bit of gap and the pin will clear to slide back. mine would stick this way and this released it to go back to drive position.