You’re the first I’ve heard of having the issue before the lift. If you search Eibach or Foutz on here you’ll find it. A couple of us stumbled upon the issue by chance.Yes I did the 2.7 inch eibach kit. But it was doing that even before I lifted it. You have a link to a thread where others are talking about this issue? If so I'd appreciate the link.
After asking around and doing some digging every single person having the issue has 2” or bigger leveling kit. I came across one guy with a 1.6 from Eibach who said he’s a experiencing it, but he also has a JB4.
I was able to talk with Bobby at Zona motorsports here in AZ and he made a new ride height sensor link. Once installed both our trucks shift fine now. Eibach and Foutz have acknowledged the issue and pulled anything over 2” from there website.