Need to know on these newer magneto ignition coils if there is any ground wire supposed to be on the screw because mine didn't come with the black wire to the screw. And if any body can tell me which way a magneto is supposed to be? Starting to get back into the hobby and havnt rode my bike in like a year and a half. I have the sbp expansion chamber on it and a dax carb. Should i do anything special to the bike like change the ratio of oil to gas it was at 30:1 when I stopped riding. Any help would be useful.