You guys need to turn your rear blade around backwards. That way it doesn't dig in to your gravel or dirt roads. I have one that I use that way in tandem with my front mounted plow, and it is amazing. The front blade does most the work, and the rear blade cleans up. I have one mile of roads on my property. Some of it is gravel. The rest is dirt. This combo works very well for me and it doesn't dig up my roads. The rear blade can also be used to back in to spots you want to move snow away from, vs pushing in to, so it can be very convenient.
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Sent from my SM-N960U using Tapatalk