It is pretty simple:
Wash the Red XF, Dry!
Spray clay lubercant (section by section) Use clay bar in a back and forth motion (heavy pressure not needed). I follow up with damp chamie. Should come out awesome.
Should feel like clean glass when you wipe your hand across treated area.
I use Clay Magic, from Automagic (out of Dallas, TX) They do sell online for those that care.
www.automagic.com
Good luck,