Help please! My 1600 classic was sitting for a couple of months during the winter. About 2 weeks back I tried to start it to get it ready for summer. It would not start and I ended up draining the battery. I decided to replace the battery with a new one and tried to start it again but still it would not start. I drained the new battery a couple of times already. I thought the fuel might be the problem so I drained the fuel tank and filled up with fresh fuel but still it would not fire up. What could be the problem?