algeo

I've a rather simple question to ask (although one I haven't been able to find the answer to by means of google): is there a limit to the number of skins you can have in a ytd file? If I take, say, a vehicle with its original textures - _1 through _4 - and add more textures - _5 through _9 - would it cause issues with the textures, or would the game simply ignore the latter four textures in the file? And if adding textures on top of already existing ones, is there a limit for it? It might be a silly question, but I'm not very familiar with how the files for this game work so I thought it best to ask here before I start fiddling with files and ruin something. :)