its seems to be the result of at least 3 separate leaks t3rra ! the right light cluster had not been sealed properly after a previous paint job (b4 my ownership) . the drain pipe from the hatch locking pin catch was about 2 inches short and consequently wasn't connected and then there's perforation in the top of the fuel filler neck rubber (adjacent to the drain hole) which has been leaking onto the top of the wheel arch then running into the boot storage well . the drain pipe is now fixed after buying a length of the stuff from porsche (cost 80p and had to be ordered from germany - you couldn't even post it for that amount

) . the filler neck seems to have been successfully plugged with some silicone sealant and i'll have another go at the lights tomorrow (4th or 5th attempt ) if they are still leaking .