Anyone have a copy of the one page instructions that came with these units? Harrell's has no support or download page so I am looking. I bought mine used and really not even sure what model I have. It is a round aluminum body, brass everthing else, works great and has 4 screw holes on the side for adjusting the weight per click???? I see a lot of them with only three screws, so I was trying to decide what I bought used here. PM or email an attachment to me at dickn52@yahoo.com if you have that page in PDF. Thanks.