Review on Sunex 5081B 8 Ton Stroke Bottle by Chris Morgan

I bought the Sunex brand because I needed the best block for my winch. The first bottle jack I received couldn't handle the load. kept bleeding. I contacted Sunex and they sent another bottle jack. They said the model I ordered was beyond repair. I put a new one in and it didn't even increase its stroke by !/2 and also bled under its own weight. I contacted Sunex for a second bottle jack and they told me to buy some hydraulic fluid. They also sent instructions on how to service the jack yourself. I just can't believe two of those bottle jacks never worked. I'm trying to find someone to fix the ones I have right now. Much luck