Cheers Guys, i just wasn't sure if these Duc's blew up if riding at that sort of rpm LOL.
I think i am still brainwashed from the old Duc's that blew up if you looked at them
I normally rode around 4000rpm in traffic but i must say today to work/home riding around 5000rpm life was so much better. Bike felt very smooth, power was always there and i actually feel 'better'. Not sure how that last part works but it was a pleasure to ride today [moto]