Tinyrc,
The tab is fine. I moved the tab on the front with great success, as shown in my pic. I couldn't move the rear tab because it holds the heatsink. So in my infinite wisdom I decided to dremel another slot in the back of the body higher up to lower it on the car. I basically did it too high and the body won't go lower enough to attach it because the chassis wedges itself first.
The back of the car body has 2 slots and one of them is wonky and in the wrong place. I wonder if my local car body repair shop will look at it.
Anyway it a good reason to buy some modelling stuff and start a customer paint job