@Mark, isn't the purpose of the degeneration (Re) to swamp the effect of differing (re) in the mirror devices?
Voltage across D7 compensates for the Vbe of T6
The voltage drop across R16, 390 Ohm is about 0.6 V, the same as the voltage across D9.
This defines a current of 0.6/0.390 = 1.54 mA in the long tail pair.
If the currents in transistors T8-T7 of the input pair are well balanced, the voltage across R22 or R23 should be around 1.54/2 * 2.2 = 1.7 V. It is a quite unusual value here.
No help is possible without knowing the right side of the circuit.