damn!
You mean i should have saved this dude befor i got down to the outer worlds?
Because when you return to zulag1 for the final Rescue's, there is no more lever between the grinders!!!
hmpf
EDIT: ok! I made it

it was just a think of timing and control, to let the grinder go down and up between abe and the Mudokon

after 20 times it suddenly worked out.
had a perfect game after that, all 99 Mudokons are rescued
Torsten