There's nothing too technically challenging in any of the lines. Some of the fills are a little cliched, or in some cases difficult to work out due to the quality of the recording. I definitely don't plan on changing the lines to something completely different, and having been in covers bands for years using someone else's lines isn't too much of a stretch.
My notes for one song at the moment state "G Bflat C - Play like Duff" because it really just feels like someone freestyling. I could tab the whole lot out but In other cases there are some more memorable fills that I've tabbed because they seemed to have been constructed to fit the rest of the track