Hello, just purchased a Woods grader scraper. Have 3,00ft long gravel driveway that I have been using a regular blade and back blading it with but over the years its developed some pretty good wash boarding in places that the regulars blade just wouldnt take out. I was looking at the grader scraper and how much better they made the roads look after using them so i went and bought one. Does anyone have one that they use? Trying to get some tips/tricks on using and setting one up and adjusting the blade heights. I used mine today for about an hour and it kept leaving drag marks from the side shoes in the driveway if i had it all the way down. I had to just barely have it down to not leave the marks, but then it didnt seem to cut the grade that much. DO i need to do it in steps like lower the blades past the shoes then cut it, then go back and raise then to smooth it out?