piece of p*ss mike. take you intake out, battery can stay where it is, no need to move it. you'll be able to access the adjustment nut from the top,
if not take the linkages off. (make sure your in neutral, plus put a nail in the linkage below your gear stick for when it is tighten it up) the left hand linkage has a circular circlip, slide that off and it'll pop up, the right hand linkage is a pain in the ass, i got mine off by sliding needle nose pliers behind and levering it out.
should be easy for a fitter like yourself, shouldnt be taking hints off a sparky mate, lol
i can show you on PDF if need be, or if it can wait until chatham im there on from 11th and ill sort it for you.