Yes, that's correct! The stock ones also wobbled, but not as badly as seen in the videos I've posted of the Big Joes. Now that I have the shims in there, they don't budge at ALL, the ONLY vibration/shake is from the off balance tires/wheels. Something I'll worry about in the future, for now the tires expand so much under acceleration with the 22t pinion that they go from their stock size to over 4" on either side (8" expansion!) so I kinda of want to keep them unbalanced for now to prevent higher speeds haha.