I recently got a 2005 VMAX from my brother. He is currently deployed and is unable to answer questions. Not sure how long the bike was in his garage, but the rear cylinder on the left side (While mounted) is misfiring at lower RPMs. When I get now the throttle pretty good I don't notice any loss of power or performance. I checked and replaced all plugs with no change. Old plugs looked ok. I little corrosion on the socket area, but nothing real bad. After the new plugs, same problem. I am thinking fuel(Carb) partially clogged or plug wires? Am I way off here? Not a great mechanic, but I know enough to get into trouble. This is my first motorcycle in 20 years, so many things have changed. I am currently running B-12 fuel system cleaner to see if that will jar loose the carb. Any other help would be great. I don't like the way it sounds, kind of embarrassing. Bike has 20400 miles and is still very strong.