Opportunity is missed by most people because it is dressed in overalls and looks like work. - Thomas Edison
I have a brand new never used M&R grid. Don't need it. I-Image STE here.
Re-posting my DIY on-press setup for film exposure and registration to print. Tape the film ever so lightly to the layout grid (taped firm to the platen). Use double sided tape on top and bottom of film. Set the screen against the 3 point pegs and press down on the screen to pick up the film. Lift out, expose, wash out the films, tape up as needed, and mount on the press using the 3 point pegs.