Too many mechanics have huge egos and don’t think anybody who doesn’t do it for a living have a clue, we’re all idiots and should bow to their superiority. My favorite (and last time I asked a shop to work on one of my trucks) was when I had just installed my blower the third time due to Whipple not including the right instructions, and it was a ***** every time due to how they designed it and some of the bolts were almost impossible to get to. I wanted to swap cams and I knew it could be done without pulling the heads by spinning the cam a few times until the lifters were popped up in the trays and then inserting rods through the oil galley holes in the front of the block so they couldn’t fall. 3 different shops told me no way, the blower and heads had to come off. That’s how the book shows it. I explained how it’s done, offered to show them articles or videos, they said it can’t be done. Acted like I was an idiot, like I had no clue. They wanted to school me on why it can’t be done like that. The last shop was close to my house, and I told them, fine- I’ll do it myself. He said let me know when I needed a tow to his shop. A week later I stopped by and let him listen to my truck after the cam was in. He still didn’t believe I’d done it like I said. *******.