Perhaps, I have unrealistic expectations of my cartridges. When I set my R2000 up for use with Piezography inks, I bought IJM carts. These have proven to be unreliable with leaks and clogs. I recently abandoned the IJM carts and bought a set from an Australian distributor. These arrived with flat batteries and one dud chip. After this inauspicious start, I have them loaded and in my R2000. Today, I printed an A4 and lo and behold, I have three ink blobs just like the IJM carts used to produce. I'm just about ready to abandon the world of refillable cartridges and just use QTR with K3 Epson carts.
I'm hoping that someone may have found reliable carts, and can pass on the name of the supplier.