I'm simultaneously making Curtis Buchanan's Democratic Chair and Christopher Schwarz's Curved Back Stick Chair. This is my first time carving a seat. I bought what I thought was white pine, but after carving the stick chair seat today, I'm thinking it is yellow pine instead. There's a dramatic difference between the early and late wood and it's much harder to carve than the videos I've watched. Is there an easy way to identify the two from each other?