I have the walker Evans shocks that came stock on my 08 d7 and they seem to be really saggy and don't rebound like they should. My front end sits lower than any iq I have seen. From what I know either the gas needs recharged or they need a full service. What do you guys recommend? Not sure if this was the cause but my last ride of the year my sway bar snapped in half and it was a real pain to ride with weak shocks and no sway bar. If I have the fronts serviced sb old I send in the rear shock for peace of mind? Sled has about 2300 miles I put a 1000 on this year and they just got worse as the year went on