[z axis print problems]

my ultimaker 2+ seems to have a problem

the prints I am getting off it are ok size wise on the x and y axis

but the z axis seems to print everything half size eg a cube 20 wide 20 deep and 20 tall

will print 20 wide 20 deep but only 10 high any idea how I can cure this problem

[have purchased a ultimaker 2+ in kit form]

upon building the printer several things trouble me

the logo on the back of the bed is incomplete and reads ltimaker 2+

the hot end has no spring and looks unlike the manual downloaded from ultimaker and leaks filament

the feeder is nothing like described in the manual and is made of metal not plastic

and after a firmware update runs backwards