OK, maybe this is a dumb question, but I'm getting ready to change my transmission fluid and I don't know if the NV4500s have a filter in them! Anyone? Also, I've looked at the various links, but haven't found any step-by-step instructions for doing this. Can anyone help me out with some instructions? I'm reasonably handy and have literally any tools I need (base auto hobby shop) including a lift so all I need is a little guidance. Feel free to email them to me to save some postings on the board. Thanks!