Mark I've not looked at Blatchat for weeks so have only just read about your issues. I built my 420R 3 years ago and had a few frustration along the way, but nothing like the problems you've had. As others have said, the hassles are genuinely worth it once you get to drive the car. But, if you want to sell it I'd approach a specialist like Seven & Classics as their prices are likely to be more reasonable and their customer service is great (I can say this from personal experience, and have also been on the wrong end of some pretty dreadful service from Caterham). Good luck with whatever you decide to do. Steve