I had one on the road and the only problem I had was the fuel pump relay going bad. I replaced that and put another 20k km on it. The F series 6 is a very realiable bike and I g'tee you that you will love it. I really do regret selling mine
Then I took it off the road and went racing with it and ended up 2nd in the New Era championship in my 1st year. I was doing 1:20 lap times (QLD Raceway) on it which made me competitive with the newer 600cc racers (mid pack).
So the bike can still keep up with the new bikes with the right pilot at the controls.