Cyclical Vibration

Having been reading a ton of posts on front diff replacements because of bad needle bearings and wondered in anyone in Ontario has experienced the same issues.
I installed 2.5” BDS spaces in the front and 1.5” blocks in the back, and now experience this cyclical vibration (only in 2 wheel drive).
Seems like there is some flaws in the eariler gen 3 diff’s and wondering if anyone has experienced similar issues and whether or not they were successful with the repair under warranty. Seems to be hit and miss in the States.

 

Seach ECGS, its not like 2nd gens, nearly every 2016+ I've lifted over 2" needs the bushing, the needle bearing does not fix it.