Yamaha suspension lowering sag question

From Yamaha YZ rider David.... "How much do shock springs cost?"

Rear shock springs retail about $110. What is your sag setting? If you have wrong springs you more than likely will not be able to achieve the ballpark range of race sag. Too much sag and you are riding too far into the travel's progression, and you have less overall net travel to suspend you for the big hit. And the bike is riding more "rude" at slower speeds because you are so far into the travel that the bike will behave as if you are going faster and/or hitting a much larger object than you really are.

Conversely, too little sag and the rear wheel will skip and dance around on the smaller stuff and that will beat your butt, too, in addition to not getting proper traction and inefficient turning.

Properly sprung. Properly set sag.