The horse is dead

If they were a direct fit then they would not require any accommodations to get them to work.
Did they come from the packaging, bolt in place and fit like a stock setup?
No, they didn’t. The OP has a valid point.
How can you be so clueless to not see this? Do you really think that a guy should expect for everything to require additional work to install it?
Screw that. He had no warning. A simple WARNING next to parts that are not a direct fit would separate the hacks from the techs.
Know your market. He isn’t just selling to professional racers and engine builders.
And the thing is, I have no issues modifying parts. I do all my own porting, fabrication, and some machine work. Had I been informed they needed that much clearancing, I'd have done it, or went 1.5s, before the heads were done and on. I was ignorant to the mods they needed. Which is why I called to ask why it was so far off. Immediately I got attitude. So many parts today dont fit, are made poorly, or are just plain wrong, I figured I got a bad set. Idk, maybe it's a combination of his parts, my parts, etc. Tolerance stacking wasn't in my favor. But it was definitely waaay off. I worked at a shop for a few years. My boss built plenty of race engines. His 406 aluminum chevy made 804 hp. I do not remember one time having issues with 1.6 rockers on anything. Although, he didn't do many mopar small blocks.