Thermoquad on 340 (plug photos)

I hope everyone is doing OK in these strange times.

So I keep playing a bit to zero in on my A/F #’s, the right timing curve, plug heat range, and fuel ring at base of the porcelain. And am pretty confident I’m there.
But I do have a question. All is good all round, idle, cruise (at most any speed) stays right at 14:1 A/F. Pulls good wide open, mostly 11’s on the meter but plugs don’t look too rich. BUT on a hill or mid throttle I see 16-17 A/F. Is this OK or too lean?