Thanks for the detailed information, and I'm sorry to hear of your strange problem with our 850ml carts in your 9890.
I have tested several sets of these carts in out 7900 and 9900 printers, and have several customers happily using them. This is the first report we've received of issues with these carts, so please know your experience is not normal, and I will work to resolve this issue for you.
When you install a cartridge into this model printer, you push it in all the way, it pops out slightly and is locked into the printer. If the cartridge doesn't pop out slightly, it's correctly positioned and can effect the chip read. Please try pushing the refill carts into your printer to lock them in, then pull gently to make sure they're correctly positioned. The 850ml carts should take up the entire cartridge chamber, so the back end of the cart is at the very end of the cartridge chamber.
Please let me know if this does the trick, if you have questions, or there's anything else I can help you with.
Best regards~ Dana