-fig-1-jpgmy ir7200 produces slant copies when printing copies in a4 orientation...a4r seems to be ok though..i have tried changing separation,feed and pick-up rollers of the pick-up assembly.. 
paper drawer

i already pin-pointed the problem..i never thought that it is the cassette itself that gives me this trouble..as shown in the figure above,the paper in the cassette is not lifted evenly..that causes the bottom side of the paper to be out first and then drag the rest,which causes the paper to slant...

these are all because of the wire that's lifting the paper is worn-out...this wire is located at the back of the cassette(see figure below)

-fig-2-jpg