Hi Dana - thank you for responding to me.
I have done the cleaning you mentioned, with the exception of the wiper blade. I have not cleaned that.
I have a collection reservoir.
I have recently had some more frequently occurring nozzle blockages, but mostly in black channels.
The ink does not drip from either the old or the new refillable carts.
These drips have never occurred during nozzle checks.
They seem to occur when I am printing on photo papers (Epson PPP Lustre, Inkpress Pro Silky) not matte papers, both of which I have used for years.
They are pretty consistent in their size, and they are almost never smeared.
The humidity varies, but nothing out of the range I have been printing in for the last two years.
I find it puzzling that when I replaced the old, refillable carts with OEM carts, the drips stopped. Then when I replaced the OEM carts with new refillable they returned.
I have never had any previous issues with the ConeColor inks or carts.
If I can provide you with any other information please let me know.