A system for adjusting at least the vertical setting between a first transport device and a second transport device in a transport section for preforms for plastic containers. The first transport device has at least one outlet unit for accepting preforms from the second transport unit and a rail unit for further transport of the preforms, the outlet unit firstly being connected to the rail unit and secondly being arranged such that it can be moved freely with respect to the second transport device. Furthermore, the first and the second transport devices are connected to one another via an adjusting unit, it being possible for the height of at least the outlet unit to be adjusted with respect to the second transport device by the adjusting unit.