Numb3rs Fanfic Finders

I am new to Numb3rs and have been lurking around reading a bunch of the stories recommended here -- lots of good stuff! What I haven't found is any mention (positive or negative) of Charlie's weight gain over the course of the show. I like how he looks with a little extra around the middle, but any stories I have read that describe his body describe him as if he were as slender as in the first season, no matter when they take place. Any recommendations? Slash preferred, but any genre or pairing is fine.