I agree with the others.
Nothing is to be done to modify the truss in any way without an engineer signing off on it.
Once an engineer is involved you can do what ever he/she designs and signs for.
I mostly work with steel truss and we are not allowed to support off of the bottom cord on most jobs, this includes I beams too.
On these jobs the ceiling contractor must tie off to the top chord of the truss.
And if I ever took a sawzal to a steel truss the GC would have me paying for repair replacement.
[This message has been edited by iwire (edited 10-23-2003).]