I need to emphasize the importance of preemptively doing something about the ESC if you have the RTR. The tape that holds the ESC in place will fail, and when it does it would be easy to destroy the non-serviceable wire harness for the ESC consdiering that there's very little slack since the receiver wire is routed tight underneath the battery tray. If any of those wires snaps, there's no replacement for it.
Anyway, I didn't like the zip ties so I just gooped my ESC directly onto the tray.