the 1st vid & the book had it: big end on the scale, horizontle of course,other end suspended & grind on the big ends till the big ends are equal (1/2-1 gram) on all of em then lay the whole rod on the scale & grind on the small end till the whole rod on the scale weights are equal (1/2-1 gram) DONE. then I saw that vid from a speed shop out west & the equalized all the big ends (within 1/2-1 gram I would assume) then equalized all the small ends (within 1/2-1 gram I would assume) DONE. that's as far as I could grasp.