1970 Duster project in Sweden

Yesterday a friend helped me to weld a bung for a wideband air fuel ratio gauge (Innovative LM-1). Then we took of my Holley to get a view of the transitions slots, and yes, I was to much into them. So we corrected that and started tuning the idle mixture until we had a satisfactory reading. The transition from idle is now crisp and nice. We took it out with the gauge hooked up, this is the results:
Idle: Perfect
Full throttle: Perfect
Cruising: maybe a little on the rich side
It does however get rich every time I give it gas, so It gets to much fuel from the accelerator pump shot.

Im thinking of going down in size from my 31 nozzle to a 28 (Holley recommends 3 sizes when you make a change), and also going down to 63 on my now 65 primary Jets. Does this sound like a good plan?