MS6 Engine Rattles Badly

My MS6 engine has been rattling badly since late last year. It's noticeable from idle to about 3k RPM or when cruising in 6th gear under 40 mph (low load).

It's not the Variable Timing Actuator again, I had that taken care of at about 30k mile and now I'm at 85K. Besides the VVT Actuator was only audible at startup before the oil pressure built up.


Anyways I'm contemplating the problem may be the timing chain guide or valves need adjustment.

Anyone have a similar issue or info on a TSB?
 
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