New 360 & a couple of questions

I really don’t understand why guys have a problem getting new engines to fire right away. Maybe it’s because so much emphasis is on TDC and that’s not where you want the timing. Or maybe they don’t prime the oiling system with hydraulic lifters. Or maybe they don’t use a known good carb with the bowls full. Whatever it is I’ll never get it. If you set it up like I said in the previous post, balancer at 15 deg, point the rotor at number 1, and you’ve done the other things I mentioned here, it will kick right off. Here’s the first fire of my BBC in my boat. This is how they should fire.

This is a hydraulic roller so no reason to bring the rpm up.