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It all worked out for me with the repeater. Don't sweat it.
One suggestion, do not put the repeater directly over your vehicle (which is a convenient place to put it as it shares the same AC outlet as the opener). I found that with mine placed there I get interference between I guess the roof and repeater location and it doesn't always work once my car is in the garage. I know it is repeater related because when I'm in the garage, the remote the came with the opener works fine, but the one in the LR does not.
Works everywhere else, so I'm guessing it's just location of the LR transmitter and location of the Remoter receiver not being ideal to receive each other.