Fitting the UE SuperMaxx servo saver?

[gumleguf]

I have the UE SuperMaxx servo saver:



I noticed the chassis in which is installed (FLM10800) looks like this:



UE writes (http://www.unlimitedengineering.com/servo_saver.shtml):

Stock E-Maxx chassis will need some modification due to the molded in spacer which rides on the post on the T and on all the aftermarket chassis I've seen.

Has my FLM10800 chassis been modified? Is it always necessary to modify a chassis to be able to fit the UE SuperMaxx servo saver?