07 870 Jake issues

[Curtisj28]

2007 cm870, 700hp heavy haul application running a hx60. Yes I understand I lose 3rd stage. No I'm not putting vgt back on at this exact moment. Considering it in the future.

I am having issues with my Jake brake. It will work great after idle when engine temp is down but when at full temp it is very weak and choppy. Boost levels range from 12-25 depending. Higher RPMs usually help but when it hits 15-16 you can hear and feel it change. If I go to stage 1 you can hear it but does virtually nothing and completely stops around 1300. And you can just hear a slight noise from valve cover. Has been an ongoing issue since purchased 400k ago. Truck has 1.3 total. 45-50 on O/H from Mr hagg. Uni tuned also. My rocker shafts and arms all around are new. New Jake harness. New head. I don't remember if we did solenoids or not. It is a 2 solenoid system. Maybe the #1 solenoid? Insite shows all 3 stages when the switch is flipped but for some reason full up is 100 middle is 33 bottom is 66. Any ideas?