Mine was the same but a bit better. I then realized that when you put the "glue" that it comes with and you push it in to stick it to the bumper then there is no gap (Because the glue keeps it in place).
For those who drive a 6-speed manual:
I usually keep the RPMs low — around 2,500 while cruising on back roads — and shift at about 3,000 RPM.
What RPM do you typically cruise at?
When do you usually shift?
Also, is there any downside to cruising at around 3,500 RPM for extended periods?