Tommy,
Most likely your capping station/head is not sealing that well.
Make sure they are clean, you should clean them 1-2 times a week.
The printer counts ink droplets and pump cycles to estimate how much ink is left in the carts. If the cap doesnt seal, it wont pump ink, but still count it.
You should contact your dealer and get new cards for your carts.
They will be at 100%, but it will allow you to empty out the carts you have.
If you have any problems contact Customer Care at Mutoh, 1-800-99Mutoh.
Give them your serial # of your printer and they can send out cards as well.
Good luck!
randya