I'm swapping handlebars on @psykcs Ducati, from the OEM bar to a Rizoma one. The current bars have Rizoma bar end mirrors fitted, and there is some sort of bar end adapter inside the handlebar which I can't get out. Pics below. Presume it's an expansion type that expands as the mirror bolt is pushed in and tightened. So right now it's tight and firmly in place, and although I can sort of see that the furthest in piece needs to be dragged back towards the end of the bar to loosen and allow me to get it out, I can't find any tool to get in there and do it. It's very narrow, anyone have any previous experience doing this, or any tips to try? I've tried a long nail (head too big), bent wire (nope), thin screwdriver. All to no avail. This flash shot shows the internal bit at the far back that I think needs to be dragged forward (outwards) to be loosened.