New transmission

At 95k miles the FJ started stuttering at 2000 RPM when shifting from 3rd to 4th gear. I took it in to the dealership and they said they couldn't do anything about it since they didn't know what the issue was. After reading through the forums I saw a posting about the torque converter. I took it to another dealership and showed them the problem and told them what the issue was. They replaced the entire transmission with a remanufactured Toyota part after paying the difference from the aftermarket part that the extended warranty company wanted to install. Everything is working well now.