Hello, I have a problem with my lift CO2.35 (3.5 tons) Two-pillar lift, this is exactly identical to the Maha Econ 3.5! Three years ago I bought the lift and it somehow never worked properly! If I lubricate the guideways from the lift sled and the nuts with the original grease then the lift lifts about 3 weeks normal only then it starts to clamp again and again so that the electronics shut down and you can only drive down! And d I have already replaced spindles and lifting nuts with new ones because I thought that I had used the wrong grease at the beginning and that the plastic molds were damaged! Unfortunately, this did not change anything either! I had no guarantee because I set up the stage myself! Of course, according to instructions in light V form! At Maha I have already asked them, however, they can not really tell me why should be due to the problem! Maybe someone had the same problem, and can help me? Thank you very much!