Laser does enable, but does not burn correctly

Hey everyone,
I own a 3-1 original (just got it). I’m assuming that if the laser is not adjusted correctly on the Z axis (too high, or two low), then the laser will not effectively burn the wood.

Currently, I have the power set to 80%, and what I notice is that the when the laser is enabled and Luban is burning an image, the wood is not burning.

As the job is running, I can place a piece of paper in the beam, and by raising/lowering the paper form the surface of the wood, I see the paper burns or not burns.

Any advice would be appreciated.