Hi I recently bought a Tacoma used from a guy who had the Ride Rites installed. The ride seems a little harsh to me at around 10psi (I just have a SnugTop Shell in the back ~130lbs). So now, I'm about to try 5psi. I'm finding it difficult to get accurate readings below 10 psi, however. I'm using my bike pump currently, but it is pretty imprecise at low psi. How do you recommend I accurately measure below 10psi?

I may just take them off and sell them if it still feels harsh.