Started getting pink towards the front edge on prints & copies. Put in a unit from another 525. Nice. So I ordered a dv unit. Installed it. Pulled tape off. Did the 2 m initializing. 1st time came up NG. Error. Did it again. This time the 2 TD initialize. come back complete. When I made a test pattern it was terrible. Whole page was pinch & cyan on top edge. Background all pinch & blue on top. What did I do wrong ? What to do now. What is the TD/atdc adj. ?