We have a Craftsman Keyless Garage Door Opener that we do not know the entry code to and do not have the manual ( just bought the home) I have looked EVERYWHERE for the type of opener and any other numbers on the keypad to help me reset it and nothing works. The only set of number I have are 031B0430 and I know it is a Craftsman. Does anyone know how to reset the code so I can use this? Thanks :)