Dont say "Buell". Bring them part numbers.

I show the rocker box gasket is $8.16 at St Paul. It appears to be used in Sportsters from 84 and up, so theres no reason why the Harley dealer, or any independent motorcycle repair shop shouldnt have them available and in stock.

The thing with snake oil, is that the cheaper products usually dont do the job. You usually have pony up for the higher end stuff to see results, and even then its iffy. Murphys law says that it will probably try to block off small oil passages in the motor and could reduce lubrication to items that need it, and if that happens you'll have a ruined pile of Buell branded parts on your garage floor.

Its not hard to do if you have patience and can follow the instructions in the manual. That said, I can't follow a cooking recipe to save my life, no matter how clear or "dumbed down" it is. This isnt a dig at you or your skills, as "not everyone can be an astronaut", myself included.