Air/ fuel tuning

hey everyone does anyone have any experience tuning with a air/fuel gauge in car?
have mine hooked up
innovate lc-2 wideband.
idles good about 14:1
cruise is 13 - 13.5
and wot is around 12.8

as for driving around the street the gauge jumps a lot and at very light throttle and off idle , gauge reads 10.5 and 11 s quite a bit.

seems to drive fine, plugs seem ok.
probably not to worry , but any suggestions ?

idle mixtures are 1 turn out
5.5PV
78/86jets
idles 1400neutral 1000drive
28locked timing



410sbm
266/272 630/630 110
indy heads
950 custom carb
13/4headers
12:1comp