SLANTY BLUES

I did a compression check before I took it apart. 1- 4 ranged from 215 down to 175 And 5 was 50 , 6 was about 85. On a fresh rebuild I'd hope for closer readings than the span of the 1 - 4

also the 7.58 static compression ratio would never get you to the 215 to 175 cranking pressures you reported earlier.

recommend that you get the Static Compression numbers to make sense prior to working the Dynamic Compression calculations