I have thought down that road as well!
If it the same post, I suggested that it seem to mess up or get better for a short while after moving things in that area.

If this is the same post, I think he has played musical chairs with that also.
The problem with an AMM is that their not as easy to spot a bad one, like you can an creaky old wooden chair! (:-)

Junkyards and the rebuilds today's are like twisting a possible green lemon and hoping it come out to be a lime flavor?

His codes use to read rich or lean at that "cursing," I mean cruising speed but then he changed the FPR and it all got worse.

The "curse" is trying to turn him, from a mechanic, into a car salesman! That's almost like a lawyer? He willing to sweeten the deal with "as is" parts.
I bet if you spoke Russian, he would probably fake it with a translation book to sell this car! (:-)

Good thing we're not blood brothers or I would bleeding all over the place with him.
I feel he is past crying or pulling hair.

This confounded thing is frustrating me too!
I live on the wrong coast or I would join a "tag team" of Brickster's to tear this thing down and then shoot that gremlin part right in the....***....heart? (:-)

Phil