I am using an XTool S1. I just install the riser base on my unit. I have the tray on the top shelf. But I’m noticing that my marking laser is blurry now. It’s not very precise. But I noticed that when it goes to cut and the laser module gets lower close to the material of the marking laser is back to being sharp and  precise. The marking laser was fine before I installed the base. 

Any idea how I can sharpen / focus it? 

I’ve run the auto distance process and that doesn’t help although I see the laser focus/sharpen when it moves closer to the material to do get the sensor reading.