I wouldn't sweat 2 or 300 lbs too much. It's not *ideal* but I don't know if it justifies a 2500 unless you've already been tossing around the idea. If it bugs you, dump the shell.
Not the popular answer, but I wouldn't worry about that too much.
2015 Ram 2500 Limited 6.4L Hemi, 3.73 LS
2007 Jay Feather 254 EXP "HMCS Anchovy" :Canada: