Reminds me of the movie scene with Steve Martin, when his name/number was printed in the phone book......"I'm somebody now"
Re-did the rear diff, got a good pattern, but backlash is out of spec (.012-ish). Still, got him on the road ... same issue.
I basically have two options:
Pull trans/case, do a refresh (got the trans rebuild kit).
Do a swap back to carb to make sure the EFI isn't the problem.
TBH, I have not been thoroughly thrilled with the EFI. It's been finicky, and even though it's not throwing a code, I can tell it's running rich by both soot-blackened plugs and the smell at the tailpipe. Before I to the carb swap, I'm going to pull the O2 sensor and give it a thorough cleaning.
I will find the problem. I will fix the problem.
My Jeep will run properly again.
I have spoken.