Dirt Bikes are mass produced by the OEM manufacturers not knowing who the rider will be. The OEM's build their bikes to cover a wide range of uses from the 120lbs MX Pro to 220lbs VET C Off-road recreational rider.
The first and most important step is making sure the springs are correct for your weight.
The springs carry the load of the rider and are related to the rider's weight, height, ability level and intended use of the bike.
Springs are not changed to tune the suspension stiffer or softer.
Springs are to carry the weight of the rider with the suspension in the correct part of the stroke.
1. Make sure your forks are aligned correctly on the front axle details
2. Set your fork height correctly details
3. Air forks: set your air pressure every ride
4. Set your sag more
5. Set your tire pressures
6. Use quality suitable tires for the terrain you are riding
These are the basics and they help!!