Hello.
I'm having a problem with my mixer tap that's very loose in the kitchen.
I know that its likely to be needed to be tightened from underneath but when I get under I can't even see if there's a nut to tighten as there is a massive kind of wingnut on the threaded bolt.
Here's an attempt at a picture to show you what I mean.

hosting images
Can anyone help with how I get this sorted?
I'm having a problem with my mixer tap that's very loose in the kitchen.
I know that its likely to be needed to be tightened from underneath but when I get under I can't even see if there's a nut to tighten as there is a massive kind of wingnut on the threaded bolt.
Here's an attempt at a picture to show you what I mean.

hosting images
Can anyone help with how I get this sorted?