I meant to note the MP but forgot.  IIRC the MP was what I considered a bit
high at about 15.  Since this is where Tracy has the staging point by design
(15 or 15.5 I think) I noticed it Chris;

I see Map of 10 - 11" at idle.  By 15 it's putting out some serious power.
Either the throttle isn't closing or you have a pretty serious leak.

I think on the more recent versions Tracy has been setting  the default
staging higher, like 16.5 - 17".

Best,

Al