Free RHO Mods for 510 Carts

I have posted in a couple of places that I am sending out some FRF-PTB mods in the mail practically free of charge. Basically all you would pay is the shipping of what should be the equivalent of a letter (hopefully.) I have received some PMs about them and I have left them instructions on how they can receive them. I figured I would make a place here for those who are participating in this 'experiment' so I can post some additional instructions, disclaimers etc. and you can post any questions you may have. Let the games begin, I guess.