Should I purposely ruin my perfect 5 star google review rating?

I own a small independent insurance agency and rely heavily on Google reviews to drive leads my way. Been in business about 3 years, have 80 or so reviews, all 5 stars. I have the most reviews and highest ratings of any of my local competitors. I've always heard a perfect 5 star rating can hurt you more than help you. I am wondering if its advisable to "poison the well" so to speak with a lower review. This would knock me down a .1 or .2 and maybe make my reviews seem more realistic. All of the reviews are legit, they all mention me by name specifically and have a decent amount of detail in them. What's the consensus here?