Adjust standard rear end?

Feb 8, 2016
35
2
34
Kalgoorlie, WA, Australia
Hey all,

I'm trying to stiffen up my standard rear shock, have undone the locking nut, applied penetrative oil for a few days to loosen it up, but I can't for the life of me move the adjusting nut below the spring perch.

Went and purchased (then modified) a 32mm spanner for the job with no luck. Just seems to slip.

Help!