I just recently picked up the fuego was wondering about the thumb bar, I took it out didn’t really use it too much but now I notice that the thumb bar has some back and forth play in it I opened the side plate and everything seems to be fine it just feels loose. I have a tatula ct which is basically the same and it doesn’t have as much play as the fuego. Dose anyone else have the same issue or should I take it back?

I'd take it back - I've got two Fuegos and neither has a 'loose' thumb-bar.

My tatula has a barley any play the fuego feels like it’s going to eventually come off. Otherwise it’s a good reel

If it's a new reel, IMO why spending time to guess the problem? Just return/exchange it.  If that's not the case, then we could try to figure it out. 

Got a Fuego and tatula's ranging from 100 to a 300 size, all totalled 5 of them, none have any play in the thumb bars.