A Connie has a 32 mm carb.
I.D. is 32 mm (1.260'). O.D. is approx. 38 mm (1.490")
Your Carbs;
I.D. is 30 mm . O.D. is approx. 36 mm
With this knowledge, I think rejetting with Connie Jetts might help, but doubtful it would be ideal.
MOB / Steve might be able to suggest jets that would help, but would be best to get correct size carbs and an airbox.
For now, I think you might just raise the needles by placing tiny washers under the jets) and see what happens.
Might fatten it up enough to help, and costs nothing.
Ride safe, Ted