Hi
The rv-10 uses the exact same seats for the rear seat as the -6, -7. Except that it places the hinge behind the F-637B and F-637A.
Basically Sandwiched between the 637A and F-637C. So no notch required.
It would move the hinge about .025 aft. That's not going to make any difference.
So if its ok for the -10 I can't see why it wouldn't be for a -7
Rv-10 manual 42-3
http://www.etigerrr.com/Fuselage/sec...seat_backs.htm
Cheers
Peter