10.2 : 1 compression 360 at sea level. Options?

Hang on what? STOP!
You listed the deck height as -.041..That's Negative, so that would be a pop-up of 8.6cc on a 4.03 bore, to subtract from the total chamber volume. That maths out to a total chamber volume of just 66.2cc...... and that makes a 12.3SCr engine.
But if that little minus sign is a slip up and the pistons are actually down in the hole .041, then the total chamber volume becomes 83.4, making the compression ratio 9.96.And so then we get

Static compression ratio of 9.96:1.
ICA of 66* with a 280/110 cam in at +4
Effective stroke is 2.74 inches.
Your dynamic compression ratio is 7.86:1 .
Your dynamic cranking pressure is 156.25 PSI.
V/P (Volume to Pressure Index) is 131.............................................131

So,if that is correct, then 155 on your gauge is dead-nuts on. The high cylinders are probably telling you that the ICA has changed, and that only happens when a cam starts dropping lobes, or the lifter is collapsed.