Some questions about track editing - shadows

I Have some questions for the experienced track editors:
1 - I'm making a long tunel (60 sectors) in other track, is it possible to show the shadow all over that length ? I tried to invert the normals in the track.jip, it worked once but not in the long tunnel.
2 - Is there any anyway to rotate an object with snap or input the amount of degrees?
3 - If i want to move the shapes from every scene at once can i move to a specific point ?
4 - Any sugesstion on how to control scale change when export shapes from GPBuilder to 3ds ?

i know its a lot of questions but apart from some information in the GPbuilder its hard to find here in the forum ..