Has anyone figure out how to drain the pellets without making a mess?  The pellets hit a cross bar and then go everywhere.  I had a big foil pan under the cross bar that caught most of them.

Not yet. I rolled mine to edge of the patio so I could stick a 5 gallon bucket under it. It worked for the most part but I had more pellets in the hopper than the 5 gallon bucket could hold. It wasn't pretty trying to close the door when pellets were still trying to flood out the door.

I used a bus pan that worked well but would not work for a full hopper of pellets.  That was a design shortfall I noticed during my clean up of the damaged pellets.  I think I put a pick of it in that thread.