I just got a new batch of blades for my Seyco.. Olson #2/0R. I tried them in some 1/2 inch (2x1/4" stacked) ash, and the first two blades, I cannot get to cut straight, or without a lot of pressure.. I really hope it's only a couple, because I had ordered 18doz blades.. I would hate to have to replace them again.. I don't normally cut that thick, so I'm hoping when I use them in my normal 1/4" thick stock, they don't have an issue.