@robf270 I would include language in the motion that states what deadlines the judge gave them to submit their response, and then you to reply to their response. Make it as complete as possible so that the judge doesn't have to shuffle through papers to get the information.
Is it possible for you to draft a quick Kentucky rule-compliant affidavit to attest to the date you received the motion opposition response? I honestly don't know if it's necessary, but you could also include a statement in the affidavit that the envelope was USPS postmarked July 16, 2018. A true and correct copy of the postmarked envelope is attached as Exhibit A. Or something to that effect.