Our 1051 began folding and stapling crooked books we narrowed it down to an issue with the guide belt that pushes the sheets into the area to be creased and folded. Sometimes the belt makes it to the home position and other times it stops about an inch or so short of pushing the paper all the way in. In the attached video, we have marked the proper home position on the guide belt and you can see it not making it all the way around. We stitched and trimmed 25 books and 8 were bad. It takes it by spells. We'll have days it doesn't do it at all. We restarted machine twice today and it has changed nothing. Service has replaced all motors in this section and no improvement. Service, which we pay for, has 'no idea' what this is that's causing it. If anyone has had this happen or has any input, it would be much appreciated. Thanks!
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