Same here, diff runs very smooth, does help that I run a 12th scale car and diffs on cars like that need to be as smooth a smooth thing, think I rebuilt mine twice and never had a problem with mine,
maybe its something to consider when running a super fast motor, its nice to have the fastest motor on the block but can we really control a car like that properly, unless your name is: take your pick, any of the top level drivers will do, like some rallycross drivers I know locally, big fast engines and no control and slighly shrunken brains but thats the nitro fumes for you,
but I digress quite a lot here, I kind of have that problem, I waffle a lot!! anyway as I said above its all in the preperation of diffs that make them work like they should, using the right components is a must, keeping it clean when building, the right amount of diff grease, flat plates and correct size diff balls and not forgetting to oil the bearings with quality bearing lube and learning how to set them correctly is hugely important, I must admit geared diffs make a lot more sense.
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