Lately my daughter (13) is complaining that her site "burns" when she plays volleyball. She has either volleyball practice or a game Mon-Fri after school. The burning occurs with the pump on or off, so I don't think it is insulin causing it. The sites looks fine, and she says it only hurts when she's really active. We've been using the Minimed Sure T's for about several months now and haven't had any real issues. We uses mainly tush sites. She's complained about the last 3 locations. I'm wondering if the steel needle is moving around with all the activity. She has thinned out a bit since volleyball season started (nothing drastic) but maybe she just feels the set more? Any ideas? Thanks!