i bought a secondary remote for my garage door because the old remote is breaking down. The motor does not have dip switches that I can tell and the only button on the back is a red reset button. How can I reset the new remote to the motor without screwing things up? I checked online and the same person said it doesn' t matter if the button is red or green, but he also said not to do it if it does not have a green button. Confusing. Please help. Thanks--Jim