What is the procedure to get PSA to acknowledge a "new" variation?

[whiteymet]

Hi Gang:

Not being a TPG collector I am wondering how to go about presenting a "new" variation to be accepted by PSA to add it to a registry?

I see nothing on their site regarding this.

I have a similar situation to the 1963 Topps stickers that come with two different backs. I do not believe both of these were noted until recent years, when it was mentioned in the SCD Standard Catalog. The cards I am referencing is also listed with two different backs in the SCD guide, but PSA has so far not noted the different backs on their flips.

If anyone has successfully lobbied such a change with PSA, please provide step by step instructions as to how you went about it. Not only having it mentioned on the label, but also how to have it added to the list of cards needed to complete a registry.

Thanks in advance for any help you can provide.

Thanks,

Fred