You can check for interference of parts with 'analyze Interference' on the Inspect Tab. By selecting two group of parts you can find out if the touch each other. But that's no giving you an alarm when you change something and after that 2 parts touching each other. An other option is to use the Activate Contact Solver on the same Inspect Tab. First Right click on 2 parts in the model-browser and add them to the Contact Set. Now Activate Contact Solver and drag under constrained parts and when the contact the moving stops. Is that what you mean.
That should help matters. Will have our drafting department play around with this. Thanks Bryan Hague Corporate QAQC Manager [cid:image003.png@01C9FFBA.D3601860] Natural Gas Services Group, Inc. 508 W. Wall St., Ste. 550 Midland, TX 79701 (432)-262-2778 office (432)-312-6028 cell firstname.lastname@example.org CONFIDENTIALITY NOTICE This electronic mail transmission and any attachments contain information belonging to the sender which may be confidential, privileged and exempt from disclosure under applicable law. This information is intended only for the use of the individual or entity to whom this electronic mail transmission is addressed. If you are not the intended recipient or the employee or agent responsible for delivering the message to the intended recipient, you are hereby notified that any disclosure, copying, distribution, or action taken or not taken in reliance on the contents of the information contained in this transmission is strictly prohibited. If you have received this transmission in error, please immediately inform me by "reply" e-mail and delete the message in its entirety. Thank you.