ManualDid you go with a compressor as well or just manual valves?
I tried WDH first and added the Airlift 5000 after seeing the sag with 6,000 lb plus trailer. Bags are the way to go with the Daystar or RC cradles if you are planning on going off road.weight distribution hitch should help with the sag quite a bit, i ordered one with my 6750lb travel trailer, also went with a tandem axle unit to help... wont get it till the spring to check it out though