I’ve seen conflicting stories as to why US 45s came with only the large hole, while 45s in the UK had a small hole that could be punched out to create a large hole. My experience was that automatic changers with an attachment for the large hole worked better than putting a stack of 45s fitted with the spiders on the standard auto spindle, but I don’t know how that would compare to a stack of UK 45s on a standard spindle.
