This reinforcement of what's already been said pretty much........
If your suspension hasn't been touched since you got the bike, it's goobered guaranteed.
I see only one mention of sag setting. That should have been done out of the box. OK...so it wasn't, so do it now. An improperly set rear sag will screw up the front, the back, the middle and all points between.;)
I've tried 90mm and hated it...it's going to be a personal setting. I suggest 100mm/4 inches.
Oh...loosen the locking spanner with a drift/punch, adjust the retainer spanner by turning the spring (unloaded), NOT wrenching the spanner. It works great to use a couple of tie-down straps to hold the bike upright (say between garage door rails) when checking for the 100mm. You'll still need someone to do the measuring, but won't need anyone to hold the bike up.
Then, go to some suspension sites and read up on how to set the clickers.
It's never going to work with the stock fork springs. What dazza said. To a T!