Some parts are incorrect because LDD these not contains.

Artikel# 76537 Shock absorber should be the 
4563144 Yellow Pneumatic Cylinder with 2 Inlets and Rounded End Medium (48mm) 
http://www.bricklink.com/search.asp?q=4563144

6541, 32000, 3622 should be
4237158 Dark Bluish Gray Pneumatic Switch with Pin Holes
http://www.bricklink.com/search.asp?q=4237158

32123 1/2 Bush yellow is not needed.

All pneumatic 4 mm hoses are not shown in LDD:

4631296 Light Bluish Gray Hose, Pneumatic 4mm D. 33L / 26.4cm 
4631300 Black Hose, Pneumatic 4mm D. 33L / 26.4cm
4631291 Blue Hose, Pneumatic 4mm D. 10L / 8cm  (2x)
4567210 Blue Hose, Pneumatic 4mm D. 14L / 11.2cm 
4631295 Light Bluish Gray Hose, Pneumatic 4mm D. 54L / 43.2cm 
4631298 Black Hose, Pneumatic 4mm D. 54L / 43.2cm 
4211508 Light Bluish Gray Pneumatic T Piece New Style (T Bar)