I believe the rear suspension knob is adjusted up 18 turns from the factory according to the owner's manual . I weigh 265 lbs and found that to be too stiff for me so I backed in off all the way and then back up 6 turns. Seems pretty good for me now. Something you are just going to have to experiment with.
I put in a progressive rear spring. A little pricey, but definitely worth it. I wasn't able to adjust the stock spring enough for me. I weigh about 260, but have a horrible back. So bad I am getting ready to have some nerve endings burned to try to alleviate some pain. Hopefully that works. But the progressive spring made the bumps in the road easier for me to handle.
As many of you may Know by now I am new only had my bike for like a week or so and to some this may be a dumb question. I would like to know if the rear suspension is under the seat and if so how do you take the seat off? My bike didn't come with an 2014 owners manual. me and my wife together weigh about 295 and no taller than 5'5. It feels good when I am riding solo but I just want to make sure the suspension is right before I ride 2up with her.
The access to the suspension knob is behind the left side cover, to the rear of the battery. To take the seats off, push against the padding on the rear seat, near the corners and you should see 2 bolts requiring an allen key to remove. Remove them, slide the rear pillon slightly back and lift out. The main seat also has 2 allen key bolts accessed by pushing the padding near the corners. If you check the compartment under the seat, you may find the owner's manual.
Keep in mind. I've not yet had to adjust my ride height. But when I had my VT 1300 this topic came up. All the guys suggested the dampening screws. That does nothing for ride height otherwise known as sag. With that I found I could access the shock and turn the collars to tighten the spring tension making the bike sag less. Then you can use knobs to adjust ride quality. Again I've not yet looked at my valk as it's been okay so far. Good luck post your findings