Has anyone had trouble with the supplied engine mount for the Tower Hobbies Trainer 40 ARF?

The Tower Hobbies Trainer 40 ARF comes with an engine mount that uses a top plate to hold the engine to the mount, instead of the standard, drilling through the engine mounting holes directly into the engine mount. This configuration looks like it might allow the engine to slide or twist on the mount.

Any advice/experience is much appreciated.