What kind of jacks do you have - HWH or Power Gear or whatever? Since you say it happens day and night, it probably is not due just to temperature changes, so it may be a leaking valve or maybe air in the lines.wornhorn said:thanks to tom and all the others for solvin my explosion problem it was indeed the jacks now how do i stablize the coach? ??? by the way this site is the greatest and thanks gain.....bobby