Strange sound in exhaust after a retorque

I attempted to scope the cylinders today, but the scope that I had was slightly too large to fit down into it.

BUT, I did swap back to the factory injectors without doing anything else and the truck sounds perfect. It appears to have been an injector issue this entire time. Luckily, I bought them from a reputable company to hopefully send them back to have them looked through :)

Also, thanks for the tip about annealing the copper washers! Seemed to work great!
 
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