The machine has a little problem to find a lot of professionals to have a look to us what is the reason for the specific results, we can not find the problem, then think if you really can not find a problem to buy a new machine. This is also used for a long time, I had learn to pass the machine repair I try to look at, found inside (linear actuator) point out a small fault cause the machine cannot work in the normal way, then I let (linear actuator) company to send us a (linear actuator) did not think machines are really good the Lord changed, and now run faster than before the strong good, it is good (linear actuator) to work with high efficiency.