[Tricky]

I'm trying to rig my drum (which is just a tad larger diameter than my Weber kettle) so that I can use a kettle lid on the top and get more headroom to allow me to smoke turkeys and other large items on my top rack.

I've decided to cut a 2" section off the top of an old throwaway kettle (i.e. the lip and a couple of inches of vertical) and have a buddy weld it to the top of my drum. That way the kettle lid will sit right on the actual lip that it was made to fit. But when I describe it to him, he's worried that the barrel and kettle aren't heavy enough to take the weld and that they'll warp and curl.

I was certain that some of the Brethren on here have done this -- any help you can offer is appreciated!