Hello, I ordered a vicious looking Bxpanded tooth bar and am having second thoughts about the purchase. I take my loader off weekly to cut my grass and in doing so stick the bucket edge onto the driveway asphalt. So far not an issue however I am wondering if the sharp tooth bar might further degrade my asphalt. Need I worry ? I will admit as a new tractor owner that getting the loader back on occasionally presents a challenge that in time I hope to master.