I will get pics of the leak but want to know what to look for relative to the mounts of the side radiator other than obvious broken or misaligned mounts. It was re-cored about 3 years ago.
If you mean the rubber mounts,look for missing pieces and/or hard rubber,if in doubt try and get a part number and get new ones
you may be able to install without much trouble,vibration is one source of a rad leak,inspect the harmonic balancer,you may
benefit with anew one.
Ideally radiator needs to be isolated from vibration and free to expand and contract.
Harmonic balancer and all belts, pulleys seem fine. Some of the end bolts were a little loose and I lightly snugged them.
Barrs stop leak will likely fix it. Even FOT uses Barrs.