SME3009 setup??

Has anyone got any set up instructions for an SME 3009 improved arm. I have not yet received it, but from looking at some on line pics it is confusing. What is the weight on the side for??
Thanks, I meant when I clicked on the link above it just took me back in this forum. I have checked out the site. I managed to get an SME series111 in mint condition with all instructions and world reviews on E Bay UK.
The link works just fine for me...but for crying out loud, it's not hard to figure out how to get there the long way:

(1) Go to

(2) Click on "Library"

(3) Scroll down and click on "SME"