With 300 lbs on that stock spring I would suggest adjusting the spring collars all the way down. The bike will feel much better if you do so.
The correct way to check would be to check sag with you and your passenger/gear on the bike. The FAQ has a write up on how to do this.
Have a great trip.
The correct way to check would be to check sag with you and your passenger/gear on the bike. The FAQ has a write up on how to do this.
Have a great trip.