Hey, I took my f4 for it first test drive, it is 1999 cbr600 f4. At first I had problem shifting to the second gear, but after two or three tries, I got it. I drove for about 15 minute to test everything, after getting on the hay way to get back home fast, the bike was running strong but no power to the rear wheel, I pulled over, but the bike in first gear, and then pushed the bike and it role like the clutch was not there. So I am not sure does that mean the clutch is slipping. I used a mobile one fully syn 10-30, should I use a 20-50 instead. If the problem is not with the oil, what else should I look for before I open the clutch cover, thanks any help would be appreciated