That's what worries me, Chrysler has had a reputation for a while now of trying to weasel out of recalling issues like this. Having a lifter and cam lobe fail is a pretty serious problem when a new camshaft alone costs $600+ and to get to the cam and lifters requires removing the cylinder heads.
Anyway how I understand it, the MDS works by shutting off oil pressure to the hydraulic plunger so it collapses and keeps the valves from opening at all. The fuel injectors for those cylinders are shut off so fuel doesn't puddle behind the intake valve. Just my theory but I bet the lack of pressurized oil has something to do with the lifters failing, it's only the MDS lifters that do this. The non -MDS lifters go forever, you never hear about this problem in non-MDS Hemis such as the ones hooked up to manual transmissions.
