I`d bring the air bleed line into the cabin,put an aquarium type air valve on it and slowly and slightly

open the valve until the high airlow over richness is tuned out.

 

Might be a temporary solution for a single altitude.

did not realize there were two pages to this question just found it, a month later ?thats out of the box,but i like it set it where i need it -because i still have not found whats going on as some times it runs fine. then 50 or so 3rd and it starts again ?thank you