m3boy and others...you are all correct sirs...
The factory took a look at the video, sent it on to S&S, and both concluded that it is in fact the compensator, which is transmitting enough lumpy torque to the driveshaft to cause the low RPM rattle at the junction with the bevel box.
So my options are:
1) Replace the "faulty" compensator with an new identical compensator under warranty...not very appealing as the problem will likely recur.
2) Pony up for a new Centa compensator for around $470
3) Buy some Dynamat, insulate the rear firewall and transmission tunnel and live with it - as the car is otherwise fine. Frankly the rattle is barely noticeable when I drive with a passenger - so this may work.
I think I may try option #3 before shelling out for option #2.
Thanks to everyone for their input.
Cheers,
GC
