Leave the receiver hitch in! It may protect you if you get rear ended! This did bend the rear of the frame down with the bumper, but didn’t pile drive us, as the rear frame/bumper took much of the impact! It did bend the receiver hitch too!
I have a 0-15, think it came from Summit Racing, turns out it's not very accurate! 3.5 psi on the gauge is actually 6.5 psi! Took a while to figure that out! 😬. Check whatever you get against a known good gauge!