Owned my Heidi for almost a year ('99 shadow ace 750) and today on the way home she starts idling real rough and lost power. I limped her home, and my first thought was that one of the cylinders wasn't firing right -- pulled the plugs and both of the plugs in the rear cylinder came out soaking wet and black. I changed the plugs to iridium ones when I first got her and have pulled them periodically to be sure nothings getting screwed up. Every time I pull them they look great -- so this is kinda out of the blue. I cleaned up both plugs and confirmed they are gapped right, and have plenty of spark to them. I cleaned the air-filter too. put it all back together and yep... SUPER rich in the rear cylinder, and normal in the front. Thoughts? have I suddenly lost compression in the rear cylinder? Nothing's ever leaked on her... stuck float? clogged needle? ugh... I've always done pretty good at avoiding working on carbs, but I guess I'll have to jump into it this time. I'm just surprised it happened so quickly, no warning and no obvious catalyst for this.