Main jet tuning... ...in France

I did some tests with a 4.5 PV I found. First feeling : I get "holes" in acceleration when applying load so I guess 4.5 is too small.

Keeping the 60 main jets I get an AFR around 15.6 when cruising at 3000rpm in 3rd gear.
with 68 main jets I get an AFR around 12.0 when cruising at 3000rpm in 3rd gear.

Correct me if I'm wrong but it seems I should keep the 6.5 PV and play with the main jets size to come closer to 14.7?

@yellow rose : If you have some main Jets you could sell, I would be glad to relieve you from this burden ;)