Applying Camera LUT to clip in timeline changing applied LUT to previous clips

Ah... think the problem is I've created a secondary storyline (grey frame, xx76), that's keeping the LUT applied to that regardless of changing LUTs to the other clips in the main storyline. I'm assuming when applying LUTS via the Inspector, it affects all the clips in the storyline and to apply them individually to a clip, best to use Effects>Custom LUT?

Noticed that the clips that aren't affected by changing LUTS have a dark grey bar that extends over the entire length of them....can't remember what I did but remembering doing something to them at a feeble attempt of stabbing in the dark. I so rarely edit in FCPX that when I do, it's a learning curve all over again.