Getting ready to start a UDS build and I was given a large 22 in. Weber grill to use for the top, my question is does the lip on the 55 gal. drum have to be cut off in order for the lid to fit or are there different size drums??... my lid lacks about a half in. from setting right, it looks like if I remove the lip it will fit perfect. Also what do you use to cut it off if youve had to do this before?