Engine tick help please (video)

I had a noise in my motor I fought for 2 years (when I could work on it). Finally had to pull the motor and tear it down to find it.

Hate to suggest it, but my "mystery noise" was due to my mistake when I installed the new timing chain. I used the mark over the key showing "0", not the mark I was supposed to use, and I had my cam off about 45 degrees. The intake valves were contacting the pistons and collapsing the lifters.

The way your rockers are bouncing around, I'm wondering if you don't have a similar problem.