I posted this in the v-drive section, but havn't gotten much response. Maybe this is a better place to ask this question. My Jones tach drive has a grease fitting on it, but it also says "do not lubricate" on the end of the tach drive. So my question is-do I or don't I grease it? I don't understand why it has this zerk fitting and says not to lube it! Here is a pic of it.-What's the deal?