the upper drawer is set A5-R and i use it several months. i changed values of 448 (Paper aligning amount adjustment at the registration section (PFP Upper drawer/ Plain paper)) and 450 (Paper aligning amount adjustment at the registration section (Upper drawer/ Plain paper)) codes (05 mode-adjustment) because of it does not print from top of paper (5mm) . now it prints skewed and paper jam after two or three prints. i could not remember what were the values and i changed several times.
sometime it prints 6 papers without issue sometime it paper jam @ exit after one print. other drawers works fine.

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