So a good job carried out on my seat and a lesson learnt. I don’t believe the ebay seller in the USA deliberately sold me the wrong foam but it’s been a sobering experience nonetheless. Of course the acid test is whether the re-covered seat is comfortable and I’m delighted to say that the transformation has been remarkable. The P&K foam absorbs bumps as it’s supposed to and the ride is vastly improved. The next time you get off a bike and complain of numb-bum take a look at the foam and see if it’s time it was replaced. You really won’t believe the transformation until you try it.