Universal Joint problems of the 2012 BMW 528

My car was having a whining noise and during the diagnosis it was found that the plastic guides within the engine block that keep the timing chain intact is bad. The technician also found that the guibo (aka universal joint) was cracked. From my research on the matter, I read that NHTSA had issued a letter pertaining to other make and model on faulty or poorly designed guibo. I presume that the affected models be investigated and coverage be extended to other lines of BMW. This is the directive from NHTSA I am referring rcak-17v067-6564. Pdf rcrit-17v067-9870. Pdf my current mileage is only about 55,000 miles and maybe there were other owners who developed this fault within the standard or extended warranty for the product line that was outside this recall. Please investigate and take corrective action.