Fuel Tank Attach

I am doing my first condition inspection on an older RV 6A which I have bought. I have owned/ built three RV8s, but this is my first 6A. Upon looking in the wing inspection panel( There is only one!) I can see that there are no 'Z" brackets which attach the fuel tanks to the wing. How are they attached on the 6A? I cant tell very well from the plans pr the drawings.
Thanks in advance.
Nordo

Tanks on the -6 are only held on with the screws around the perimeter, and the forward attach bracket to the fuselage. The -6 has a double row of screws along the top and bottom of the spar, but I seem to recall that later RV's with the Z brackets only have a single row top and bottom.

That makes sense now. Thanks!