Is the sway bar rod to the valve lever good? To test sls put 200lbs in the rear and rev at 2000 rpm for 30 secs it should lift.

Yes the leveling bar is good.

I'm not sure if I ever actually tested it at 2k rpm. I think I just loaded it at idle and nothing happened. Will it not raise at idle regardless of weight loaded?

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2016 Monsoon Gray Audi Allroad - 21k
2008 Black Mercedes E350 4Matic Sport - 131k
2014 Jeep Wranger Unlimited Sahara - 62k
2003 Gray Mercedes ML350 - 122k

Pretty sure the drill is it needs revving to start pumping up the rams, the pump will be at its minimum pressure at tickover, it makes sense to me it would work better at driving speeds

There isn't that much fluid system in the system normally, maybe if the spheres are ruptured and full of oil it could slow it down even more?

Plus I reckon it needs more than 120kg to actually get the rear end down enough for the sls to kick in....unless I weigh a lot less than I think!

Have you tried taking off the adjuster and moving the lever directly at the sls valve to test that works ? - bear in mind previous cautions lol

cheers!

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cheers!!