My daughter's insulin start was 6 days ago. We are already on our 5th infusion set. The cannula keeps getting bent and I'm so frustrated. All will be fine for awhile - even as long as 36 hrs - and then all the sudden her bg just starts to climb and climb, boluses do no good and we start to see trace ketones. Change set, repeat. The cannulas are visibly bent when we take them out. We've been using inset 30's. Tried a different kind (regular inset) in the middle of the night last night. Seemed great until this afternoon. Another goner. Now we are waiting to get our sample of 2 contact-detach (sure-T) sets. Any advice/suggestions would be greatly appreciated!