I didn't remove the wheel arch liners, I used a piece of nozzle from a silicone tube with a slot in the side, obviously the proper tool will make it easier. The air struts are surprisingly light so that helps with removal. Looking forward to the end result. Also if you could eventually let us know the total cost it might help others. I see Rockauto are selling a complete strut assembly for £55 with a two year warranty, but I think the route you're taking is likely to produce better results. It's also a good time to check your front upper control arms as the struts need to come off to replace them.