Hello everyone and happy holidays. I have a 9u d6 that i'm converting to direct start.I have copied the files from swishy which i think were originaly posted by old magnet. my question is there are 2 diffrent drives available, an 11 tooth and a 12 tooth which drive would be the correct one? can not seam to find any information on which drive to use. any help would be appriciated thanks.