Automatic Transmission Torque Converter problems of the 2018 Honda Ridgeline

I had a trans lite on the dash and overheating issues in the (6 speed) transmission at about 61000 miles. The issue started with a juddering vibration that was reported to the dealer at 39000 miles. Then I noticed increased vibration from the torque converter(juddering) up until the trans indicated a code for the clutches not locking up, which causes overheating. I nursed this until I took it to manchester Honda for repair. They said if this is a juddering problem, it would be covered under the warrenty until 80k miles. They changed the fluid and did a software update. This update changed the shift points where the lack of lockup became worse. I also noticed the gas mileage went down about 25%. It was so bad that the trans light went on again the next day after the repair. They claimed that with the fluid change and software update, that everything was ok. During this debacle, I called Honda customer service several times and got no help. They insisted that this truck does not qualify for the TSB issued for the 17's and earlier. This overheating issue has been documented on the owners forum for all the earlier models as well as the 2018's and 2019's. Now with the trans nearly non-functional, I took the truck to liberty Honda where they told me the torque converter needs replacement. I knew that the converter failed, but they refused to cover anything under warranty. Can you help with this situation please?.