I am a new smoker, did my first pork butt (3 lbs) on a smoke hollow 4 n 1. Had a few issues very difficult to keep smoker heated wouldn't get above 200. Went through a lot of charcoal and wood more then I thought it should. after it was done, Let it rest for an hour after removing from smoker meat was very tough and very dry, not sure what I need to do to keep meat juicy, any advice??