Variodach loses Oel

Hello forum members, I have a problem with my Vario roof. First the cylinder has lost over the passenger door Oel, had it repaired at Mercedes and now the pump loses oil. I saw that the cylinder also loses over the driver door Oel. Would like to change now all 7 of the 8 cylinders and the pump but honestly cuffs before the task. Mercedes contracting partner makes me more problems than they solve the problem. They handed me the car defective with the words, yes everything would have to be changed though before everything was dry and functional. So the trust is gone. Is there a professional among you, the will is to come to Dubai and fix the roof for me? I would buy parts from Mercedes Germany. I already have an offer here. But must be an absolute professional. Sometimes a week with beach and sun is an incentive. Greeting Holger