In summary, the variables to produce a "mythical" quality Pt-Pd prints reportedly are:
1) density of chemicals (Potassium chloroplatinite - K2PtCl4 + Palladium dichloride - PdCl2 and Ferric Oxalate- C6Fe2O12) in emulsion
2) quality of negative (Mitsubishi Pictorico OHP transparency for digital negatives with digital colour correction)
3) strength and temperature of the developer (Potassium ferrioxalate - K3[Fe(C2O4)3] )
4) quality and structure of the paper fibers
5) a nose for understanding and experimenting with chemical processes, and
6) the passion to face the challenges of failure to succeed.
Correct me if I missed something. Thanks!
PS: You mentioning "masters" reminded me of an ancient Sanskrit expression that reads, "Nothing can grow under the eminence of a banyan tree." (for knowing more about banyan, visit https://en.wikipedia.org/wiki/Banyan)