I went down to the garage yesterday and had a good look around while it was up on the ramp. I don't have any ramps etc at home so don't usually see it from that angle. It wasn't as bad as feared no actual rust except some 'dust' that could be brushed off. It did look tired though as did the wood so agreed to do it based on the theory that it is preventative measures. Hopefully when it comes to resale any prospective customer will take it as that i.e. looking after the car rather than thinking its hiding nasties.