yup, we had a client want his float switch installed before the sump was dropped off we warned them about not being able to just slide the tank around and having to be careful, little tap on the side of the aquarium stand and it cracked the whole side panel.
I have also had a dam 4x2x2 slip and I think thats the only time I have had an advantage from having a bulkhead i was able to put my foot under the bulkhead to save the tank from cracking. fun times eh....
