Now I do it at the lifter..right or wrong/..I might recheck after I get the head on. now checking it at .050 before max and after. I got 60 deg and 35 deg. 60+35+180=275 div/2 = 137.5 - 35 =102.5 so very close. I will try tonys way tomorow. Only thing I do like about how I do it. is you only got to read .050. and 0 on the dail. where the max deal you reading odd number and adding .050 to odd numbers to read on the dail..