worry about this or no

Sounds like an air pressure regulator. It mounts to the air compressor. Its around $50. The ones with the blue plastic cap are factory set and non adjustable. Black cap is adjustable. Hope this helps

 

Also called a governor

 

Yes

 

The air governor is what tells the air dryer purge valve to open when the maximum set pressure is reached

 

Here is what they both look like

 

No not your air dryer. In the pictures above Ive got one with a blue cap. Its preset NOT to go above 125 psi, its not adjustable.

The black one, Has I believe like a screw or something that you can make control what psi is set to. Yours might need to be dialed back a bit. With that said, my old Columbia mine use to go right where yours was for years, no problems.

You're worried...4noreason...

 

If it’s only occasionally, it may be just be the gauges. I hit them, sometimes and they’ll read correctly. 125-130 ok