Well took the car to mercedes dealer and they dropped the gearbox replaced the bush in the gearbox, tightened the linkage, reset all the gear shift linkages and it only cost £1.80 plus 3 hours labour. I am very impressed so that closes that one. Thanks for the great forum. Next is the wiper mechanism. After replacing the accelerator cable I noticed the aluminium bracket that holds the wiper motor on one side and the wiper arm on th other was in two pieces. I took the whole thing apart and will TIG weld it. Might need help on reassembling and posiyioning of the wiper arm.