All the kits I've seen on Wemoto, eBay, Z-Power etc. don't match what I need

Here is a pic of my fuel tap off my 1983 Z1000J2.
You can see that the "gasket" (as Kawasaki call it, round disc below the diaphragm) has 1 hole in the middle and 4 around the outside.

Here is a pic of the one Z-Power and every other shop sell. Quite clearly this is different, with no hole in the middle and 5 around the outside!

Has anyone come across this problem before and where the hell do I get the correct kit from

Thanks, Will