Dobson miter- rite saw

[Pikepole]

I was giving a Dobson miter saw.  My question is what are the two screws at the bottom of saw holder for.  Should they be tight or loose so saw slides easy ? Is their any site has info. on this saw

                                          thanks

[David Bogard]

This will fill you in on the Miter-rite (about the 3 minute mark)

https://www.youtube.com/watch?v=X0JjLIG1bsY