Oil Pressure gauge freaking out

New motor, didn't do it before and I don't know what changed, I'd be scared too.

For me it wouldn't be a big deal to pull the pan and remove/inspect change pump.

I'd be looking at valve train covers off and running. If it had a lifter uncovering the groove it may do the same thing, but I don't know how to check without Intake removal.

If you do pull the pump check the oil block off plug is tight and in at the correct depth.

I'm really scratching the head on this one.

Pulling the pan is last resort for me. Last time I pulled the engine...it was main bearings bad....I'm really hoping this is something not to do with the oil pump or taking the pan off. If I have to pull the engine I will be pretty bummed, so I am trying all other things first.