Hi Barry, I'll pop down to my boat and check the measurements. Do you have a copy of the Looe user leaflet - if not I can scan it for you. There is an adjustment for Dyform rigging.
By the way, there is a bit of a compromise between getting the rig tight to power to windward and being able to close the heads door. And getting leaks from the deck chain plates cover. I slackened my rig over the winter and had no more rain water dripping in.
Below are some details taken from my (photocopied) book of the boat. However, the more I talk to other 325/335 owners - even boats built in the same year - the more I find almost every boat is different!
Rig Material Diameter Length
Upper Cap Shrouds - V1 Dyform S/S 1x19 7 mm 11.120 m
Intermediates - V2/D2 Dyform S/S 1x19 5 mm 7.597 m
Lowers - D1 Dyform S/S 1x19 7 mm 4.130 m
Forestay Dyform S/S 1x19 6 mm 11.300 m
Backstay Dyform S/S 1x19 5 mm 9.150 m
Backstay Bridle S/S 7x19 6 mm 9.450 m
Best Wishes,
John
Nosey 325-26