Hi. Have some questions for you fellas. I’m from Canada, and we do snow clearing inside the city. A lot of our manholes are not flush with our city streets and we are frequently hitting them with our graders. It’s impossible to remember where everyone is as we have a fairly decent size city. Our 3 Cat 140m’s have all bent the circles to the point where the shims fall out and circles need replacing at a 30k dollar bill. 2 of the 140’s have bent 2 circles each. They only have around 3-4000 hours. Is this common? Our new 770GP is snapping the circle shims and breaking them right off, but at a much cheaper repair bill, it is still a pain with only 400 hours on it now, it’s done this twice. We used to run Volvo and champion graders and never ever had these problems. Curious if any other city operators have this same situation, and if the 160’s or 870s would stand up better? Love the Cat M series graders, but they aren’t holding up well. Not a fan of the GP’s but they do seem more stout at this moment. But like I said it is still very new with only 400 hrs.