Went to take a look at the barrel in question today along with my weber kettle lid.
Lid didnt fit on top OR on the bottom BUT we came up with another solution and is to cut the lid off the top leaving the barrel bead and welding an 1" strip of steel all the way around and then fitting the lid to that. I will also beable to use gasket rope or something similar to get a perfect seal.
All up is costing me $120 including barrel, parts and labor.
Since the inside of the barrel is bare metal and not epoxy I do not mind paying this amount considering my kettle lid will fit AND I dont need to waste tons of time burning and sanding the epoxy off.
I will post photos of the construction when I get the barrel back on Monday.
Proud Owner of a UDS & Kent double grill