I tried for the first time yesterday to split some 3 year old rounds of black ash and even a 20 inch long 8 inch round laughed at my X27. I just read through this thread https://www.hearth.com/talk/threads/split-now-or-in-spring.136250/ and it sounds like people process wood soon after it is cut. I am starting to think that by letting my ash dry I have just made more work for myself. When I did manage to get a split off with some wedges it is testing at 16 to 20% moisture. BTW I had to drive the wedges separately to keep from getting them stuck. In an 8 inch round it was drive a wedge out of sight along an edge then use a second wedge from the side of the round to finish the split and free both wedges. No way it should be this hard.