I assume "note cards" could also mean greeting cards. I don't have a P900, but on my 3880 this can be an issue with the 60lb Pecos Gloss card stock. The only real solution is to gently bend each card immediately before printing. I have switched to the 96lb stock and it's no longer an issue, provided the paper thickness and platen gap are set appropriately. The problem I find with either stock is the paper feed. It's difficult to feed more than one at a time.