The only section you need look at is the 52.5 Mhz selective amplifier as mentioned in that article. Unfortunately, that article refers to a receiver that is already functional, yours is not. Therefore, any alignement suggestions cannot work in your case.
You need to fault find.
The selective amplifier mixes the VHF oscillator, this is the Megahz knob, and the output of the harmonic generator.
Check both these sections .?
If you have little to no test gear, do the following.
To test for harmonic activity in the HG, place a normal AM radio near the first mixer chip, located on the front right of the left? hand PCB. A blank carrier should be heard on the AM radio at 1 mHz.
With an FM radio tuned to 88 MhZ,, the FRG7 megacycle oscillator should be heard on the FM radio when tuned to 29 mHz.
If you hear these, then the fault lies either in the mixer or following amplifier
