I added another 80 kms long training with strenght work-outs. I did 6 repetitions 4' to 5' minutes long and I feel I am much more able now to substain the whole work-out. During the first hour I did 2x10' of tempo and my average cadence has been more than 90 during the intervals. It means that when I am fresh I can pedal at cadence that I consider good, even if it takes lot of energy. Last time I did this work-outs I rested on the following day feeling still sored and tired. But this time I was able to substain a 4hrs good ride with some high cadence intervals. Training with PC is always hard but recovering it it's getting faster and faster.