Sorted it with weld, plate fibre glass and loads of underseal!
Pulled all the other grommets out and waxoiled and undersealed them, Found another right by this one but on the sill, can feel a hole behind the VW underseal, think ill do it in a couple of weeks and weld in the jacking points with some more plate at the same time!
Also found cracked underseal by rear axle bracket so that prompted me into major undersealing every where and wax oil to boot.
black fingernails
