Making my own feeds with affiliate code intact

[Joe Pineapples]

Hi
I own a small humble paysite and I'm trying to make feeds so people can promote me.
I can make feeds up no probs and syndicate the feeds no probs either that part all works fine, it's just I can get an affiliate code to stay in the feed - it keeps getting wiped out when feed appears on the blogs.

I'm using a basic feed making prgm, maybe there's better software that can do it.

Many Thanks