Does anyone know what size screws this thing uses to hold the shell onto the power chassis? There are four screws, two in front, two in back that do a dual duty: they hold a retainer clip for the coupler and hold the shell onto the power chassis. I need one of the screws that goes on the back. Atlas does not show said screws on its website parts department. Does anyone know what size they are? I am assuming a metric size.
Thank you in advance.