what is the vacuum reading where you are going lean?
i would throw an 8.5 PV in on the primary side and see if it still goes in the 15.0 AFR area with the light-moderate load.
if so, then you probably need to open up the PVCR if you want to keep the leaner jets in.

if you're already getting the transition circuit cruise where you need it then the IFR's are probably fine as is.