New engine has loss of compression

In what ways would I have noticed if they didn't seat? Because I always thought the thing made great power.

After the bad gas I intentianally left the plugs in to see if they would clear up, when I pulled them for the compression test the plugs did in fact get clean, I would guess that the Pistons were slowly getting clean again. After the bad gas I stepped on it once and it left a black cloud behind me, only did it thag time, never had any more smoke after that. After the bad gas I only put about 50 miles on it so it never had a nice long drive to clean crap out.

The coolant went everywhere too, it filled up the cylinders completely, that's why they look wet, same with the heads, it was sitting there for quite some time and the level stayed the same as well.

I hope the issue is the head...I am kinda thinking that it is, I wouldn't think that one piston would be bad already. I talked to my local machine shop and they told me that they have had issues with eddy heads, recently lots of warped heads and bad valve runout is commonly seen when they buy them. I also looked more into the compression readings, altitude (I'm at 2200 feet) and how the cam was installed can effect the reading, so I will just take the variance as the important factor I guess.