I recently replaced a Moen with a Grohe in the kitchen. The retaining mechanism is the same, a nut screwed under a retaining bracket. The Grohe likes the nut to be very tight, for stability, as it is heavy and has nothing for lateral support. The problem I have is that the nut is loosening up from normal use of the faucet. So after a while, the faucet's body starts wobbling. Any ideas? Thanks in advance.
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Installing new Grohe kitchen faucet