Are the murky waters of suspension set up..
Theres not a lot yer can do with the shock... It is what it is...
It dosn't matter what spring yer put on it..the damping is just
not able to control it..
The front end , there are a few options other than full replacement..
As stated new springs & heavyer oil... but the best is a set of Gold valves.
You do have to pull the forks apart & drill the holes in the damping rods so they no longer work.. then all the compression & rebound damping
is then done by the gold valves.. they are adjustable for compression & re-bound damping..
Have you set the sag ?... most people don't.. use it as it comes..
or they set it for the least amount of compression when they sit on
the bike... Suspenion has to be able to travel in both directions..
so for a bike with around 225mm 9" of travel you should have about 75mm of sag when seated or 30/35% of travel..
trying to set the sag is quick easy indicator to find out if the bike is sprung correctly for you & and any extra weight you carry..