I can't get my XVZ1200 (1984 Venture Royal) running yet, I bought a non runner. I've taken the carbs out to give them a good clean, it looks like two of the cylinders aren't getting any petrol at all, they were totally dry. After trying to start the bike up I checked all the spark plugs again for a spark and only the front two are sparking, the two rear ones look like they aren't sparking at all, not even a weak spark. I've also bought another set of coils so I decided to change the two rear coils, and still no spark?