Yes.
Evans chairs and first-year HM chairs were 5-2-5, then HM switched to 5-2-4 until the chairs went out of production in the mid-60s.
Production restarted in 1994. Brand-new chairs are 4-2-4 and my 2004 chair is 4-2-4; it's likely that all of the chairs built since 1994 are 4-2-4, but I don't know that for certain.
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