OK thanks. I will give it a try.
Is the range of adjustment THAT great? I mean is it like going from a Lexus LS460 ride (when set to its softest) to a Corvette Z06 (at its firmest)? Or is it just a subtle difference in bump absorption?
I appreciate all the help this forum provides.
To be honest, I haven't tried the Zero's full range of suspension adjustments, so I can't offer an opinion for the Fast Ace parts. However, most other adjustable (cheap) suspensions that I have tried provide only a limited range of dampening and that tends to be only in the slow range of movement. You still get bumped around when hitting a sharp bump as the adjustments do not affect fast suspension movements. BMW's stock suspensions are a good example of this. They provide a nice ride on easy bumps, like a driveway swale, but feel like they lock up when hitting a sharp bump like the edge of a pothole.
My suggestion is to set the damping screws for full soft, go for a ride and if the bike feels funny, or weaves while going around a corner quickly, then keep tightening up the suspension screws (start with the rebound screw first) until things settle down and you feel comfortable with the suspension action. Before you fiddle with the rear shock damping adjustments, first make sure that you have enough preload and that you are not getting more than about 40mm of sag compared with a fully extended rear shock when you sit on the bike.
The compression damping controls how fast the fork or shock compresses when hitting a bump or (also in the case of the front suspension) when you brake hard. Rebound tends to be the most effective when controlling suspension movement, which is why most standard stock shocks only have rebound adjustments (BMW again).