Do Bell & Colvill fit them Steve or do you pop over to Guildford to fit them?There does not seem to be a warranty issue when you take the seats out. I’ve had plenty of warranty work since fitting them and the only comment from Bell and Covill is that they wanted to stock them. I’m 100% certain that if you were to sit in the car with the B10XL’s in, you would never want the spongy ones back.