I've found the MXA mag settings are just too harsh for "average guy". I've started using MobilATF synthetic in the forks @ minimum oil level recommended in the owners manual. Rebound is set @ 9-11 clicks out, wiht compression 16-18 clicks out for woods riding, 12-14 for MX. I also keep the forks flush, lowering them will upset balance.
As for the shock, when woods riding, I run the hi-speed compression 1/2 turn back in from all the way soft, and low-speed 18 clicks out. For MX, I turn high speed out 3.5 to 4 turns out, with low speed @ 12-14 clicks out.
Race sag I keep at 96mm for MX, 104mm for woods.
I have not had any headshake, double check your race sag vs free sag (weight of bike sagging shock all by itself). Your bike should have 5-15mm of free sag once race sag is set.
I also run anywhere from 9-11 ps1 of air in tires.
Hope my tinkering helps out.
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01CR250
Uuugh, that was pretty cool