Having an issue with this machine. Orig call was for a broken diverter gate. Replaced with a used one. Two weeks later there for the same thing again.(gate broke in same place plastic in both cases very brittle) replaced diverter unit with new one and fuser at the same time. Back two weeks later(today). Fuser top cover warped on read side frame. Upgraded firmware replaced fuser and vac out back cover,lvps,and fans above left side door. Fuser and toner not oem. Any thoughts or suggestions! Thanks