The clip on my nanostream broke for the 2nd time in 6 months. The firs time it broke I just ordered another one online but I wanted to check to see if there was an issue with these. I don't really mess with the powerhead at all so I'm not sure why it would break. I don't want to keep shelling out the cash for clips only to have them need to be replaced so soon. Is this something I'm doing wrong or a known issue?