So running the foxwell I find it cannot control L/R independently, ECU does not support that. It raised to a crazy height and I thought it would blow the bags but nope. They hold but seem to still be low on the right rear and I cycled repeatedly and will see if it helps. Looks okay right now. The major fill which lifted it to SUV height with about four inches above each tire should blow out any crap, corrosion or particulate, caught in the air valve on lowering!