I replaced the sink sprayer nozzle on my kitchen sink about 3 months ago and it seemed to be working OK (with the exception of less water pressure than before it broke). Then, one day the nozzle popped right off when my son turned on the faucet (Moen single lever). Water comes out of the hose, but not out of the faucet. If I hold my finger over the hose, water will come out of the faucet. Of course, I tried to screw the nozzle back on, but unless I hold down the nozzle lever when I turn the water on, it just pops off again. What would you suggest?