Yes, this is correct, the bad behavior has returned and is more frequent. Thanks for your suggestions, we are also reviewing motor mounts, the harmonic balancer and crankshaft pulley.

 

Good details, thanks. No loose parts were found at disassembly when latest gen components were installed, so as I just mentioned in the post to @Unhingd , we are expanding scope to look elsewhere. Since there is vibration felt when the engine is spinning down with the clutch disengaged, we are turning our focus to components from the flywheel forward.

 

Keep up the good detective work @scotter - we in the MT group are hoping you get a resolution. The entire driveshaft and linkages are suspects at this point.

Paging @HermanWiegman at @Onca Engineering - need your input here!