I have a C652 when ever you copy or print the lead edge is not covered evenly.I have replace the transfer belt.Black drum and developer.Printer control board,MFP board,printer control board.I don't think it is the print head.because it's only the lead edge. and everything eles looks good.When I do the test gradation pattern it looks very good.But I have a void area where the white is so you don't see it.If I send separate color cmyk on 11*17 the color is not even across.