The HQ-129-X was in need of a recapping. The old wax coated caps were melting and dripping wax. The unit is in fairly good shape and I did not identify any modifications.
This pic shows all of the old caps that I replaced.
Here is a view of the IF section with the original caps.
Below is after the replacement of the caps in the IF section. You sure gain allot of space with todays smaller caps.
Next is the power supply and BFO section.