Compression test results mystery?

Hello all, I was hoping you could help me figure this one out:

Two weeks I ran a compression test because my car was bogging and there was smoke coming from the exhaust during startup

Cylinder 1: 151
Cylinder 2: 60
Cylinder 3: 151
Cylinder 4: 151

I left the car alone until today, I ran seafoam spray engine cleaner and lube (through the throttle body) thinking I might have a stuck valve or something. Results:

Cylinder 1: 120
Cylinder 2: 151
Cylinder 3: 151
Cylinder 4: 151

WTF

So I dropped some oil into cylinder #1, along with some seafoam, started the engine and revved til the smoke stopped

Cylinder 1: 151
Cylinder 2: 151
Cylinder 3: 151
Cylinder 4: 151


So, is my engine ok?
Why would the low psi cylinder move from #2 to #1 in two weeks/after seafoam?
I had some white smoke coming from the behind the valve cover during startup that went away?

What is my next step? Valve clearances? More seafoam spray? Lol?

Thanks!