Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Will not hold position after 4 months

I was happy with this shower head. I liked the pressure, the adjustments, and the shutoff valve.Unfortunately after four months the pivot that holds the shower head at the position you want lost its ability to hold the shower head in position. The pivot operates on friction and it seems the parts have worn down just enough that the friction is no longer sufficient to hold the shower head in position.