many thanks for the encouraging respond. I struggled a little with z1/2 training as we do have a poor winter season here and instead of several ski mountaining tours I struggled in my hilly area, without snow. A 4 to 6 h ski mountaining tour would have easily reduced my too high Z3 /4 proportion.
Nevertheless very important to beat the Z1 /2 drum. I will do my very best! And snow is coming!