I have the same rig which I replaced when it was 15 years old. My local rigger is very old school and I realised the shrouds were too slack. I found a good rigger further away who tightened everything up and let me mark the line through the tackle for tightening up the back stay. He took 2 readings so I have a mark for max tension and min tension at all other times of light wind etc. That’s proved useful when using a big gennaker in lighter wind conditions.
I have the same rig which I replaced when it was 15 years old. My local rigger is very old school and I realised the shrouds were too slack. I found a good rigger further away who tightened everything up and let me mark the line through the tackle for tightening up the back stay. He took 2 readings so I have a mark for max tension and min tension at all other times of light wind etc. That’s proved useful when using a big gennaker in lighter wind conditions.