Hello everybody, I have a Ricoh MP C300SR multifunction walking the wrong stapling the sheets. The normal and staple every 3 leaves, (Original, Duplicate and Triplicate) sometimes reaches the last page and this evil is positioned and what you get out of staples, and sometimes a third sheet or all of them are thrown away without stapling .
I've changed all expenses rollers inside the finisher, cleaned sensors but the problem maintains itself.

Does anyone know what could be?

Thank You.