So what's the trick for replacing the rear? I managed the front after 2 goes after nicking the inner tube with the irons, now the rear really is a test of patience, it took 2 hours to finally break the bead, and I wasn't happy with how much effort it took trying to get the bead over the rim, I actually thought I'd end up breaking the rim. Well I ended up dropping it off at a garage to get it done, but is the a trick I've missed with doing the rear? I had 2x16" and 2x24" irons to work with.