Cm2250 2nd stage jakes wont work, only 1st and 3rd do

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I have a 2012 KW CM2250 ISX15. Truck has 827K miles, new in-inframe/overhaul at 810K miles. I bought the truck with everything factory and all 3 stages of jakes worked. I then deleted/tuned the truck and now only my 1st and 3rd stage jakes work, and they work as normal. I have a smartwheel and when i press my 2nd stage, it feels exactly as my 3rd. My steering buttons were just replaced and Insight shows each stage being commanded (30%, 60%, 100%). I didnt like my tune and my tuner was unwilling to help me so i payed another completely different tuner and tried 2 different tunes and still dont have my 2nd stage "working". Insight shows the command, so i know the buttons work, but there is zero difference in performance and/or boost between 2nd and 3rd stage (between 38 to 40psi boost during jaking on 2nd and 3rd stage).

For my overhaul at 810K I replaced injectors, cylinder head, rockers/valvetrain, jake solenoids, fuel pump, a/c comp, alternator, turbo, turbo actuator, ECM wiring harness, all sensors on block, oil cooler, fan clutch, fan hub, and much more. Under the hood, she has mostly new parts now, and runs great.

All 3 stages worked before the delete, but after 2 tuners and 3 tunes total between them, i still have no 2nd stage. Thoughts?