Have HWH 625 levelers on a 05 Newmar Dutch Star. On my return trip from Az I noticed the back jack indicators lights came on while going down the road. Now the back jacks have not gone compeletly ...
I had the same problem with my 2005 Newmar Northern Star. I had all the springs replaced with the new style springs. They have a taper toward the end of the spring were the hook is. I always have my jacks down and haven't had a problem since. Hope this helps.