I took apart the entire motorized floor nozzle with brush bar on my Shark NV752 vacuum to clean it and replace the belt (see pic of the part), but now trying to put it back together and there's like 14 or so screws in 4+ sizes and various parts that I don't remember where they go. An assembly diagram that shows where all the pieces go and what size screws go where would be incredibly helpful, but I can't seem to find one online. Can anyone help? Thank you!