Hi Lasse,
Normally your stays (port and stbd) have the same length, to allow proper rigging by measuring the gap in the turnbuckles, as you did.
Roughly rigging the mast is not so complicated and you can do it yourself provided you are organized, and a minimum of two persons :
- Start with the forestay and furler, set the pin in the same hole as originally.
- Then put the long side stays (the ones going to the mast head) and tight the turnbuckles by hand
- Now go to the aft lower stays, and tight it by hand.
Your mast is now temporarily secured and you can disconnect the crane sling.
Once released from the crane, tight your side stays and gent the measurements equal side to side. (port & stbd)
- Tight the D1(side stays going mid-mast) to get your mast straight (from the boom, look along the mast to check on the straightness. adjust D1 if needed)
- then tight the front lower stays (same turnbuckle clearance)
- finally tight the aft lower stays (same turnbuckle clearance)
Last step is to tight your backstay, that will pre-bend your past and straight up the fore stay.
Anyway, once the mast tuning is done, it needs to be adjusted while sailing in a smooth 10-12 kts breeze;
At least you would get the things done, and go on with the boat preparation.
Then you can afford looking for a technician to confirm the tuning.
Nicolas