I installed 8 of these 64 inch blinds and a few will not allow the slats to lay completely flat near the bottom half of the blind. How do I fix this?

Hello. I would try pushing them down manually. You can also try turning the wand to tilt them open and close quickly to get the slats to be in sync. If that does not work you can return them to the store. If you are unable to return. Please email a copy of your receipt along with a description of the issue to consumer.service@levolor.com. One of our customer service specialist can put in a refund request in order for you to receive funds to purchase a new blind. My apologies for the inconvenience. - Travis