Review on FEL PRO VS 50369 Valve Gasket by Dan Weeman

At least one reviewer mentioned that the gasket was done upside down/upside down. Well I thought he made a mistake, maybe due to inexperience or a mistake. But I was wrong! The seal is upside down. I installed it anyway because the box says "non-refundable if opened". I don't know if it's still leaking because I have other work to do on the car. But I will write to Fel Pro to get their opinion. If it runs out, Amazon will get a refund from me. I'll definitely post the results. Update: With no response from Fel-Pro, all I can say is that it doesn't leak, but I don't know how long it will last. In my humble opinion, it's definitely done wrong.