Question 1 - Scud fire...
Code:name_of_scud action ["scud launch"]
Makes scud missile move to vertical ready-to-launch position
Code:name_of_scud action ["scud start"]
Makes scud missile ignite and launch
your right but just alittle note it takes about 15 seconds for the scud to get into a launch state so for example
name_of_scud action ["scud launch"]
~15
name_of_scud action ["scud start"]
to be abit more exact
and question 3
im guessing that lies within the action landing auto pilot
have a look in the action thread
if not how about this flyinheight 0 and a limited speed waypoint ?
(probal not right just a guess)