I have refilled it a couple times so far. I use a little rubber plug that comes with most refill kits. It fits tight. Very little drippage. No drips after plug is in place.
Here is the nozzle check.
I did reclick the cartridges into the print head. Soon as it starts to streak I print another...
I refilled the OEM cartridges with a kit I have for my other printers. The usual method. Popped the little ball through the top and filled with syringe and plugged the hole.
Works intermittantly now. Sometimes I have to pop them out the cartridge and then click them back in to print clean...