O.K. I've done everything I know to do, etc: drivers, Black only, best, and everytime I attempt to transfer with polish remover there is color that is brought up. I have a envy 5660 that I run in single cartridge mode which is supposed to blk only. Brand new # 62 pots. The colors are green, yellow mostly......................and still no trans's on anything, with or without trans fluids. they are tw white, and white dykem which used to work great I might add. The only nest step I have left is use 100% acetone.......no finger nail polish stuff, but I gotta go get it