Re 6.4 / 392 Jeep SRT engines - Can any one advise if the problem of lifters failing (way before they should) been rectified in later models? If so from what year on is OK? I can't find anything in the forums about this, but lots of tales of expensive repairs. I understand there were revised lifters produced from around March 2015, does anyone know if these have fixed the problem of failing lifter roller bearings? Are there still oil supply issues to thelifters/cam in later models? Has anyone with a 2016 to 2020 SRT had any lifters fail? Thanking you for you input in advance