So I am new to the W2 and have been trying to read as much as I can find. I got a set of 48⁰ W2s for a great deal. I see they can be made to work on the standard 59⁰ blocks. Tell me about the ductile iron rockers. I thought you had to go with Jesel or T&D offset set ups. Maybe still do, but I am learning. Thanks