You probably better of starting a new topic in http://forums.ldraw.org/list.php?11
In the meantime you could try the following:
Install the unofficial library
http://www.melkert.net/LDCad/faq#faq_unoflib
And generic info on working with dynamic (pneumatic) parts.
http://www.melkert.net/LDCad/docs/advEdit
In the meantime you could try the following:
Install the unofficial library
http://www.melkert.net/LDCad/faq#faq_unoflib
And generic info on working with dynamic (pneumatic) parts.
http://www.melkert.net/LDCad/docs/advEdit