Well after hearing and reading about the spectro oil, I finally found a place to purchase. I didn't think a person could really tell the difference in the trans and primary, well it is very noticeable, thanks to spectro and glider.
I had the straight geared 2000 5 speed but thinking that the HD's came out Later with the beveled 5 gear to make it Quieter.. Don't know what year but do remember it happening.. The bevel gear is quieter that the straight cut...
Maybe some one will remember or look and post back..What year the 5 gear was beveled..
Never a problem with noise in any of my bikes, Just using a good gear oil makes a Big difference..