You know the black cover they give you for the control box. You better put it on and keep it on. If a little piece of dirt or sand gets in the menue button it will cause it to stick. Had a hell of a time getting mine unstuck. Your ID goes and you can't change anything. Otherwise besides a split cousion on the handle at the bottom. This third F75 has been working great. I really like the small coil. It did pretty good in the iron and the trash. Still testing it and the X70 6" 18.75KHx DD coil. : : Later Jerry aka Tinfoil