I've got an issue with my Honda vt250c that I'd like some advice on. The issue is the bike splutters/surges and loses power while accelerating. It started while riding on the highway when I knew I was very close to having to switch to reserve, the bike started spluttering like it does when it runs out of fuel so I switched it to reserve but the bike never picked up speed like it usually does after going to reserve. I filled the bike up and the problem stayed. While accelerating it sputters and has no power. It idles fine and revs fine while sitting in neutral. The problem only happens under load. I've checked fuel lines, drained tank and checked tap, looked at the air filter, changed plugs and checked the battery. I tend to believe its electrical and it starting around the limit I get out of my fuel before reserve might just be a coincidence. Any advice on the issue and what else to check?