New Light Black Cartridge not clicking in properly on 7890


I’m doing the initial flush of converting my 7890 to PiezoPro.

The new Light Black Cartridge freshly filled with PiezoFlush is not clicking in properly. The other 8 cartridges loaded fine. The chip is in place and properly aligned, the air plugs were removed, the existing cart was re-inserted and it clicks in just fine.

So I’m dead in the water with a cart that will not load and is holding 350ml of PiezoFlush and my 7890 hostage.


guy washburn