The link below is to the part you will need from a highly recommended company rated A+ with the Better Business Bureau. They offer a 100% money back guarantee, EVEN ON INSTALLED ELECTRICAL PARTS, for an entire year! They are the only company to allow returns on installed parts for a refund and offer a FULL ONE YEAR WARRANTY!
Gear Kit $25.90 <----- CLICK HERE FOR THE CORRECT PART FOR YOUR MODEL
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I appreciate your response but can't reach mounting screws unless I open the door and the door won't open if the motor is running. Do you have any secret switches I can access from under the foot panel?