My extent of knowledge about Source Engineering is that I purchased and installed their "motion control" valves on all 6 of my air bags. Cut down the side to side movement when exiting or entering a driveway or uneven pavement.
Good telephone help from the owner.
2016 Newmar Dutch Star 4369
Newmar Owners Club
USAF 1966-1969,- Law Enforcement 1969 - 2003, Unemployed (retired) since March 2003