Perhaps everyone else is doing this but it was pretty new to me until a few years ago and it upped my pork butt game! I heard about this method and tried it and it was wonderful.
Smoke a pork butt on a wire rack inside an aluminum steam pan as usual and catch all of the juice in the pan.
When shredding the pork butt be sure to clean out all of the fat, or as much as to care too….
Pour the juice into a grease separator and let it do its thing. Get all of the juice and fat separated and pour every bit of the juice that is not fat back into the shredded pork. And mix it in.
If you are not doing this, try it next time.