Car shudders when coming to a hard brake and then stalls. From what I have found online, it's a known issue with 2010, 11, and 12 Legacy. I took it to the dealership and they say it is a blockage in the torque converter and that it and the transmission need to be replaced - $7500. From posts I have seen online elsewhere, most have replaced the converter ONLY for $1500. Anyone have any experience with this? And can one tell me as to why if both are replaced the cost is so high?