I received and unpacked the bead blaster on time. The only assembly required is to screw on the blaster tube. Initially. it was very difficult to turn and small damage to the external thread of the tube was noted. After some work with small files and a shot of liquid film, it turned immediately. This is the basis for "4 stars". The tires on our Kubota ZD1211-72 are 26 x 12-16 with a low profile and tend to lose the bead seal when it is low. I've tried lubricating beads, ratchet straps, etc. but have always had a difficult time getting the beads back on to see where the leak is. I tried starter fluid once a long time ago and never said again. It worked the first time! The tank is easy to fill with a quick coupling and a ball valve.