Will the lid off of my weber grill in the pic fit right on a 50 gallon drum for a UDS build? After brainstorming all day I am thinking of stripping my weber cart down and turning it into a mobile UDS smoker. I got a few questions. 1- How do you guys clean out the bottom of all the ashes? 2- Of the 3 air holes drilled in the bottom, can I put a ball valve in all 3 to have complete control? 3-Can a UDS double as a standard grill for those nights when you want to grill a steak or brats? 4-My weber lid has a hole for a thermometer. Is temps measured above the meat as accurate as temps measured mid chamber? 5-As long a you got a really good burn done on your barrel, does it really matter what was inside it originally? I would think any burn for a few hours would remove anything harmful including oil or antifreeze. Especially if you soaped and washed it out prior to the burn.