Had a little communication with Maxton here in the UK. They have no "kit" for the
796 although they have done work on the 1100. I sent them some info from the 796 parts list & owners manual & they say that the forks (which they haven't seen yet) seem to be similar to the Aprilia RS125 Marzocchi's. With those they take off one fork bottom/axle/caliper mount & weld in a platform (which the other fork already has) then fit their GP20 cartridge kit = typically £650 rebound only, £780 rebound & preload adjustment.

This may change when they have the forks in their hands! Although they say in over 25 years business only 1 or 2 forks have not been fixable. They also do a GP30 cartridge but I have no info on them.
I have asked about a basic spring & spacer option & am waiting for reply but I think they will need to see forks eventually. I'm sticking with the std ones for a while yet.
Don't know about Hyperpro, 796 not listed in their options. (2011 catalogue)
I have some Maxton info on 1100 forks which maybe better in an 1100 thread.