I don't understand how this works. How does the coal get into the drum through a hole in the bottom?
The magic coal fairy shovels it into the top of the drum. You don;t have a magic coal shoveling fairy in your basement? oh wait.... they grew up and probably moved out.
It's old graphic from a about 10 years ago. Most people put a hole in the side of the drum and then slide it over the pipe. You can get about 300 pounds on it if you do it that way. With the hole in the bottom and the drum sitting on top of blocks you can get about 450+ pounds. Plus if the coal can get under the drum any coal piled up outside of it will get pulled by the worm.
If you need to remove the drum you may have to remove any coal around it and pull it up. You can't do that with hole in the side of the drum.
As fas as the doghouse that is something else I feel is also not needed. I don;t know if there is anything to prevent this with the EFM but with the Van Wert there is some set screws for the pipe. Once those are loosened I just use a pipe wrench to turn it and push it into the coal. It's not difficult with buck and will be even easier with rice. Once the pipe is in there a sufficient length disconnect the auger and use the pipe wrench to screw it into the pipe. I just had to do this recently, should of took some pictures.