He probably decided not to because it would've taken another 6 months of you ghosting him.
You made a mistake on the fittings too, never offered to make those right.
No I wasn't. My issue is that it was advertised at AN-8. That's a critical measurement, as the reason people use AN fittings is because the sizes are industry wide, reliable, and seal to thousands of PSI. Yours don't even seal under vacuum, and yes I've tested this. Your manufacturer fucked up, and instead of making it right you continued to sell them, and continued to advertise them at AN-8. They're not even close.
Ya, they're popular, they can be valuable pieces in a PCV system. That doesn't mean you didn't fuck up.