[cutrunner]

^ your right
Did an experiment inthe shop one day, as a bet.
One of the guys that just bought a $350 snapon tester was acting like an azz so we all compression tested the same motor, with out different guages.
There was a 20lb difference from the lowest to highest guage.
But they were all equal, and thats what matters.
If your ever unsure , always try a second tester before taking the motor apart

 

[cutrunner]

As far as the op's question goes:
On some motors the starter armature is supposed to stick up in the flywheel teeth but go down once started.
Go outside and start the boat up with the hood off, if the armature goes down once its running your good to go. If it stays locked in the teeth, you gots problems

 

[cutrunner]

Never heard of WFO?
What rock u been livin under creek? ;D