I have a 2004 Prowler Regal 285 5th wheel. While servicing my bearings, I noticed that my chassis is equipped with brackets on the frame and axle for shocks, but I don't have any shocks. I have spent hours searching online for shocks but have been unsuccessful. Does anyone have shocks on their travel trailer? If you do, what brand are your shocks and do you have a direction you can lead me to getting some of my own? The space between the bracket holes when the suspension is fully extended (hanging) is 13" and I have Dexter 6 lug axles.