It sounds like the clutch pressure plate fingers are extending more from the weights on the fingers above 2200 RPM
I would adjust clutch rod out some more to raise the pedal up so you have very little pedal free travel before it starts to disengage the clutch to see if that is what is going on
All the OEM Dodge and Plymouth 4 speed cars I've owned and raced needed very little pedal travel to get them to shift easily Maybe a 1/4 inch of pedal movement from the top to get them to shift without dragging the clutch throw out bearing on the fingers