as far as customer service they are great, and most of the time the products are great. but i have a WSM and my dome therm reads about 10 degrees colder. so i called weber and they had no problem sending me out a new therm. i got it yesterday so i boil some water to test it and the new one is farther off then the one i have. it read almost 20 degrees cold. WTF with these therms? and the absolute worst part is that if i use a tel tru therm i have to modify the lid to get it in and then i have a second hold in the lid to deal with.