Hi, I have a GE Superadio I portable AM FM radio that probably needs a replacement transistor for the AM RF amp stage. The FM band works perfectly but the AM band is very lacking in sensitivity. I tried aligning the AM section according to the procedure in the service manual but there is very little improvement. All voltages on the RF transistor and the IC are correct. I would like suggestions for suitable part numbers for a replacement for this transistor as the original GE part is no longer available. I have attached a copy of the schematic and parts list.