I just acquired the 2nd 911 I've owned with sport seats (a 72s), and this one has the same "malady" as the first: The seat backs move slightly, even when the adjusting lever is firmly seated. With the former car, I just assumed that they were just worn, but the current car is low mileage with fully restored seats.
Is this normal, or is the mechanism worn? I've not had any apart, so I don't know if this is something easily rectified.
Thanks,
Lee