How to manually clean Pro-100

[mknabster]

Hi there, I have been a happy user of my Pro-100 for over 7 years now, but i have been noticing a few issues with printing over the past few jobs i have been doing, not sure if they are all related, but who knows. Here are my issues:

1. On the lower left of what is printed out, i get a black smudge on the paper. I have test this out with all different types of paper types and sizes, but they all seem to have the exact same type of smudge in that section of the paper.
2. The prints are overly dark as of late, and sometimes the colors are completely off. For example, i was printing a card that was supposed to be different shades of red, but for some reason, it came out as green. I did replace the magenta tank and that did kind of fix it, but the original tank was only 75% used.

I have gone through all of the utility options to try to clean this out, and the nozzles do seem to be printing in the proper patterns, though the colors are off or are too dark, or not dark enough in some cases. That smudge i also driving me nuts. So my question is on what is the best way to manually clean this thing out, as the software tests/utilities don't seem to be doing much. Thanks

[mknabster]

All right, thanks for all your help John, I'll mess with the paper a bit and see what happens.I'm just glad what you sent me came out nice!