HI, I have an 04 vrcb 4200 miles, I havn't had any problems until today, I was riding to work and when I shifted from 1st to 2nd I noticed my clutch started slipping, my rpms went up but the bike sped up slowly, I then shifted to 3rd and felt the same thing, if I rev it up slowly it gains speed but if I try to speed up fast my rpms shoot up and the clutch slips. I stoped the bike and when I took off on 1st it did the same thing again, the rpms shoot up and I gain no speed. I can gain speed if I rev it up slowly. I did a search but couldn't find this same exact problem, can you guys tell me if this is the clutch going bad or something else. I changed the oil about 2 months ago I used mobil one V-twin oil, and an hd filter.