The torque converter on my 2012 with 120k is failing. Software update has been done along with fill and drains of the ATF. After dealer upgraded the software the shuddering stopped except when going up a steep incline. I don't want to risk any further damage to the tranny, so trying to decide between a family owned shop with great reputation and the dealer. I thought about asking if the private shop would install an OEM converter but have not done that yet. I'm leaning towards having the dealer do it as they have all the required special tools and hopefully a mechanic who will actually do a good job. Anyone have experience with aftermarket converters? One shop told me that his rebuild shop would use kevlar and converter would outlast the Honda OEM part?