I think I still have the black plug. I think you could use it by fitting the OEM spec bullet connectors I used.
From memory I`m pretty sure I fitted #75 power jets in both carbs on the original set.
On my race bike, I`ve just gone the HRC route & fitted blanks to the power jets. Filled them with solder as per the advice in the tuning section. Perhaps you could try this & eliminate the power jets altogether?
I wonder if the TPS on the new set of carbs may be causing the new -not wanting to rev issue?