UPDATE
So after more reading and some sleep I’ve figured it out. 
For everyone who has a DD-500 (and possibly other 500 series pedals)…
I have mine setup with the Standard patch set up. This is A/B. So your PC# might be different depending on your set up.
Select Bank 1 of presets (patches 1A-43B)
- MSG 1 = CC #0 – value: 0
- MSG 2 = PC 0-127 depending on what patch you’re looking for
Select Bank 2 of presets (patches 44A-86A)
- MSG 1 = CC #0 – value: 1
- MSG 2 = PC 0-127 depending on what patch you’re looking for
Select Bank 3 of presets (patches 86B-99B)
- MSG 1 = CC #0 – value: 2
- MSG 2 = PC 0-39 depending on what patch you’re looking for
Hope this helps someone looking for a solution like I was!