Hammy tasting ribs

Bill,

     Just bought your book can’t wait to read it. My last rack of ribs (Tyson brand from Walmart) turned out pink and hammy tasting. I used jos rub cooked on weber smoky mountain grill. Cooked them trigg style. Any idea what went wrong?  Also any insight on a backwoods smoker?  Trying to decide between it or a stumps. Thanks for all the info you provide!!!

  Jason