<https://www.vwvortex.com/threads/very-fast-tapping-sound.2314693/>
<http://schema.org/articleBody>
"Re: very fast tapping sound (pturner67)\n\nthey prolly had screws left over....\n....\n....\nthats why it is fixed"
<https://www.vwvortex.com/threads/very-fast-tapping-sound.2314693/page-2#post-26758646>