Just an update on the longest headgasket repair, I finally got back to really working on this. Got the driver side value cover off. Got one of the fuel link quick connects undone but I'm struggling with the other. See where the quick connect tool is currently set, I just cannot get this to come apart. I'm pulling hard enough to a point I'm worried I might break / bend the lines and it isn't budging. The tool goes in (like it did with the other quick connect line) but maybe it doesn't go in far enough? It's slightly bigger than the line I successfully disconnected and the tool does seem to fit this. Any tips? Any other way to disconnect this?