Agree. As I said before. Be really critical of yourself, you don't have to justify or comment about it to us. But, did you do a good job, to your standards? Coukd anybody else have done better for the same price? Could they or you have done better for a higher price? Proud of your work? Confident any other tradesperson would say the same? If so, stand your ground and ask for your money. Only give in, if you yourself thinks it wasn't good enough. I am not criticising your work, I can't even see the issue. Just trying to make the point, that you are your own quality manager, was it up to your standards?