Triumph Legend Tt Stutters Power

I'm hoping someone may be able to help. I have recently had the carbs off and had them cleaned and jetted as the fuel had crystallized and caused flooding with fuel when trying to start. (Left for about 2 years) but now it's back on the road and given it a good ride out. At about 65mph and then trying to get a bit more speed or just any further power the power stutters, loses it. I would say up until about that speed it seems okay. However, not sure if this is normal too be I cant over rev the bike either. So unlike my Kawasaki z650 I can keep up with the high revs I cant with the triumph. Is this normal too with the age of the bike or similar problem to the above?