partial success!
I gave it a decent thwack with a hammer and flathead screwdriver all around the star nut, seemed to loosen it up and now when I use the clutch lever manually, I can get the clutch disengaged, but it looks like maybe the star bracket has rotated a tiny bit and is firmly against the small lock screw now rather than a small gap each side.
as a result the plate seems to have a slight wobble, atleast I hope its an effect of that -- I didn't bang it hard enough to damage it I wouldnt imagine..
How can I tighten this using basic tools heh, not sure I have a flathead wide enough as its quite large.
Also: It seems *very* tight still, like I still have to way over turn my clutch lever to the 3 mark (using a clock as an analogy, with it starting at ~9, moving backwards to 6 normally)
doesn't seem possible that a clutch cable could easilly pull this far or this hard. I also havent located the propper mount on the engine for the clutch cable, but ive had it appropriately pulling the lever from a random frame position
seems kinda flakey way to do it if theres an actual mount though
Progress atleast