We've been CGM'ing for nearly two years. Why suddenly can I not get a sensor inserted??!!!! I load the sensor into the Sen-Serter and cock it. I peel off the clear tape and remove the clear needle guard. I angle the serter by following the angle of the serter feet (45 degrees). Push the plunger, and the needle only goes in half way!!! I've tried four times tonight. Wasted two sensors. I even tried a different Sen-Serter. The same still happened. Nate has 4 holes in his butt and NO sensor. I had a melt-down. I called MM. They are sending 2 replacement sensors. They want my two wasted ones back so they can check them out. Is anyine else having this problem? Could the tape/patch on the sensor be too big, and it's dragging in the the serter, just like the recent infusion set problems? Poor Nate. I hate this more than you can imagine...sticking him 4 times and still not being able to get a sensor inserted. Going to try ONE more time with a new box of sensors I just received. Lord help the rep I get on the phone if this one doesn't go all the way in.