I did overbuy my turnouts, spurred on in part by forums chatter that there was an Atlas track shortage that couldn't soon be rectified because of the factory situation in Chin just after I committed to doing a large layout in C55. The overbuying was also in part due to my generalized track planning method of a sketch, with many track arrangement details left to construction, because in 50 plus years of MRR, and six layouts, I have never actually gotten a track plan to work exactly as I drew it on paper in the complicated turnout areas. As a result, I have way too many curved ones, which I have tried to avoid using, and will try to return.
However, I did double checked my track plan this morning before ording so I am not hoarding, LOL.
On my layouts, it does seem that once a pattern is set, it does favor one side of turnouts over the other. Not sure why the right would be the one, but maybe the clock theory has some validity. On my track plans, there was usually a key element to work around in the room that set things up left or right turn wise, though.