I had terrible trouble with the self-serter on Mios. So many people love them I was expecting great things, but when I was trying alternative sets I had 3 failures/breakages out of 6 tries, plus one kinked cannula
😱
Martin - another suggesting regarding hanging the pump on your belt. I don't know whether the Animas is the same, but the belt clip on the Medtronic means the pump has to hang vertically. This caused me problems getting in and out of the car because the pump would dig me in the ribs/hips and generally get caught on things be annoying because it was, as far as I was concerned 'the wrong way round'.
Some people suggested getting a generic camera or phone case, but in the end I solved the problem perfectly with a ?1 scrunchie from Asda. It's a long loop of fabric covered elastic that wraps 3-4 times around my belt and I clip Artoo horizontally onto it.
The best thing is that since it's elasticated I can shift the pump left-right between belt loops and esily tilt towards me to access buttons/see the screen etc.
More details and a pic here:
http://www.everydayupsanddowns.co.uk/2012/07/hows-it-hanging.html
Maybe something like that would work for you?