Hi,
I’ve just fixed my problems on 2.6 with raphnet’s 4nes4snes adapter.
on http://www.petrockblock.com/forums/topic/autofire-on-the-axis/ is a custom kernel posted that you should install. If you follow “feederchain’s” post you should be able to solve you’re problem.
My retropie jstest finds 8 axis again.
Goodluck