Projects '53 Mild Custom - Dads Hot Rod

After running dry and wet compression tests these were my best numbers.
#1 - 140
#2 - 90
#3 - 90
#4 - 120
#5 - 90
#6 - 130
#7 - 120
#8 - 90

Heres where it gets interesting... the firing order on a y block is 15486372. When you arrange them like this -
1548
6372
1 and 6 are 90° from each other, meaning when one is on compression, 6 is on exhaust and so on...5 and 3, 4 and 7. So I arranged the compression readings in the same order...
140 90 120 90
130 90 120 90
I am not positive what this points at, Maybe valve lash? I am going to check the rockers next and cold adjust em to .019