
the other reason I was thinking it was poping out would be the conection between sections of the screw drive but i checked them yesterday and they seen ok, but I don't know what to look for really.

. I engage it and after a couple of uses (3-5) the screw rotates but the door does not move, the carriage disengages itself. I checked the screw for any inperfections that would disengage the carriage but i see nothing. I'm afraid that if i replace the carriage the same thing will continue happening. I have been looking all over the internet for an answer but can't find any info. please help.

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