My son has offered to build me a full sized cooking grate for my Lang 60 to replace the almost useless top grate that came with my smoker. He wants to make it so that the top rack will slide in and out to make loading and unloading easier. Our questions are; ~and maybe someone running a Lang 84 or someone who has built their rig using this type of set up~can better answer this- (1) How are the top rack guides attached, and (2) Are the rack guides channel iron or just angle iron. From what we can see on Ben's site, they look like channel iron tacked to the front and back at the door opening. If this works out, he has offered to do the same set up for the bottom grate.If you can share pics with some close ups, we sure would appreciate it!!