Have you tried the compression/rebound screws? Adjusted the spring collars?
Soft: is compression and that's where a harsh ride on a bad road can soften that compressing occurrence. I want to screw out at least two clicks soft to feel a difference.
Rebound: is when the soft compression setting has the tire up under the back fender, you feel this bang of your butt into the seat; you'll know the rebound was too slow getting back to the ground.
Spring: is going to have the rings spin up and unload the spring's preload. Then mark the ring's slots with two types of magic marker colors, or nail polish, use punch marks; placed at four points, compass style. With wheel off ground, the shock is fully extended, spin up the lock collars so the spring floats up and down. Spin the adjust ring so you take out the up and down of the spring, or spin till it stops. If the spring won't move but the adjust ring does, use that spring as your static mark and spin the ring till it lines up with the first painted mark on the ring. Write down all your settings.
Work backwards so look at the spring setting first. Did you go to this setting and find it's still too hard a ride?
Rebound stops the pogo sticking so did you try the settings in the middle, or run them in; to slow down the pogo effect?
Compression is where it hurts the butt. I find the center clicks and count in or out from there.
Where you usually take your routine road to work, know all the bumps to avoid steer wise, and stand up for the here it comes. And you'd think the spring is for weight and it might be just as harsh a ride once all that time and money wasted is man adapts where the wallet can't.
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