Gentlemen, I would appreciate help on a sharp MX-5001n, that keeps jamming in registration assembly. Customer removed a jam, supposedly and now it's jamming with w/ the paper leading edge at registration rollers, intermittent curling below registration area & lead edge on rollers. Taken out the registration assy. gears are smooth, the motor is smooth, no chipped gears. Cleaned reflective sensors, no changes so far. the jam codes are below. Thank you in advance for your help! 
CPFD1_S1,
PPD2_N1
PPD2_N2

CPFD1_S1,
PPD2_N1
PPD2_N2
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