So you can hear the other side of the coin... 3/4 and one ton 5.7 trucks and manual cars do not have MDS and they still have the same exact issue, I have replaced a lot of them. If someone wants a picture of the cam from my current 5.7 3/4 ton non MDS give me your cell number, I can't get pics to load on here anymore... [/quote]

I dont think anyone who's been reading through these forums is going to argue with your experiences too much, but im pretty sure in this instance, the mds schitt the bed. Both codes are mds cylinders, and a failed solenoid will not cause the issues he is describing. I can attest to your point that there is a good amount of proof online that non mds lifters fail, im just not seeing it at the rate the mds do.