I'm going to inspect a used 1994 ULS-25 Universal engraver this weekend with the intent on purchasing it if it passes muster.

The laser has supposedly been refurbished within the last 6 months with replaced bearings and a re-charged laser. I plan on bringing the materials I plan to cut and doing sample cuts on all 4 corners of the table. Besides that are there any other things that I should look for on this particular vintage of Universal laser?

This is a local sale, and the sellers seem quite on the up-and-up. I just want to make sure I cover all the bases since this is a person-to-person sale.