Thinking about picking up one of the heavily discounted FISTs in the area. However, I had a 2015 that had the overheating issue before they identified it through the recall channels. Has anything improved since then, are is there still an underlying overheating issue? I see folks are installing aftermarket radiators, but that's not the fix I am looking for. Were there any changes made to the 2016 or 2017 that made things better?