is it possble to reset the ink levels on my lexmark, X,5650, all my old lexmark,s would just keep on printing for 4 or 5 refills before the heads went but this one is just like an epson? it just keeps telling me that the cartrige is empty?? (in the uk epson ink works out at £1,170, per litre for a, DX6000,) it looks like lexmark are jumping on the same bandwagon,