Engine Tapping From Cold??

[TimF]

Yeah I am familiar with that tapping noise.

I reckon it's fuel related. I have noticed that using a particular servo near my house results in the tapping sound, but another servo does not. So I started going to the latter servo consistently and have not had the sound while using their fuel. When I went away over Easter, I noticed the sound return as I used another servo's fuel.

As with you, the sound goes away as my bike warms up.