One leg holds the finderscope away from the main optical tube .... one set of collimating screws .... yep .... very common on cheaper telescopes and a pain in the butt to keep aligned.
You can buy finderscope quick release brackets from the better parts suppliers , these have a quick release dovetail for the dual-alignment rings (attached to a mini dovetail bar , so you have a finderscope that can detached easily and stays alighned cf twin rings (with 3 alignment screws- usually nylon , better of brass or stainless).
Try
http://www.lumicon.com/telescope-acc...ope+Bracket&hn= or similar.