ORIGINAL: sloppyG
the OP saying the "rear end wants to shoot up" leads me to think that the suspension's not absorbing the bumps like it should
the rear needs to be softer so it absorbs the bumps rather than launching the rear in to the air
I see. You may be right. With his current setup it should be good huh? Do you think his gold springs and 40 wt would be too bouncy? Heavier fluid no? Maybe he is binding somewhere.
Check your pivot ball caps to see if they are binding.