Steve Morse model neck size differences over the years.

Hey everyone, new here and this is my first post. Sorry if this is the wrong spot for this, but I was curious to see if you guys have noticed the difference in neck sizes on the Morse guitars depending upon what era they are from? I had a Standard from like 2010 and the neck felt really really thin to me. I have a 2001 thats a little thicker than that and 2 from the 90’s that are chunky (which I love, especially my 95) While I haven’t actually measured them, there is absolutley no denying that the necks are different thicknesses (front to back, not width).
Anywho, I just wanted to see what you guys had to say. Thanks!
BTW these are all Standards. I don’t have the Y2D….anymore…sold them both