i heard the old caster ones were good, but these new ones, the shock cap wants to pull off the shock body, like the threads dont mesh well together... i was going to buy the jammin big bores, but id rather wait it out until the caster ones are out... other than that, no complaints on the car whatsoever? i cant wait to get some runs in, its driving me f@#$ing crazy staring at it, i gotta see what it can do!! LOL!