Please share the Call Efficiency Inc_HO_Efficiency and DCR_RAd and DCR_HO of these TRXs which is degraded are these degraded TRXs on same combiner / CS04 cable. if so try swapping them with that of another sector to confirm. Also try changing the TRX’s slots in the cabinet that may also get faulty.
Are these TRXs in the inner zone or outer then the cases may be due to other parameter settings.
Also Check if these TRXs are connected to seperate antenna