I told you jf414 is reliable. In my opinion rubber lines are better. Easy to replace. Cost of “repair” is amazingly low good for you. I was quoted around 400$ for oil change in dealership without pan removal and without filter replacement so you paid fraction of the cost making good decision to take to transmission shop. Plus quality of those shops are much higher than dealer would do cos they are doing transmission 8-10 hrs a day. For midpipe if u are sure u cant force them to repair under warranty then take to muffler repair shop :-) will be cheaper and with descent quality. Just pick the shop with good reviews in your area.