look for the units in center far
some units have high(his foots are out !) and oversiz balls and another have normal sized but lowered (his top is out...)

maybe these spherics are hit/selection location???
in first time i think his center is the ground plate but no
after i think to first part3d center but the huge size for one and the normal for other with footprint 0.1(not visible for the little unit!!!) say no again...
maybe the 3d parts max size ???
don t understant for this bollocks
anothers problem is the ground tracks are very slow to print (10 or 20seconds !)
another some units not crush trees and not found path (footprint3,3) with crushstrenght 100 or higter and others with a copy of .fbi file crush (???)
is crushing is in scripts files ?