Gareth
The fairleads are on tracks, to bisect the jib luff two thirds up on a full jib I find the best position of the car is fully back ( next to spray hood ), on the one occasion where I reefed the jib using my spar I moved the car two notches forward.
What’s your experience so far on the handling of the boat with the larger jib, I,m well impressed with the extra sail area and it’s still so well balanced which was a concern (Matt told me it would be fine) when I asked for it. Not sure if the boats pointing is improved on the old boat yet will need to do some compass runs to assess first. I also specified dyneema for forestay and shrouds, much nicer to deal with when mast dropped, one consequence though is the changing length of the forestay, when I have dropped the mast and sometime later put it up again I find the forestay too short to attach to the bowsprit again, I have adjusted it twice now on the lashings.
Peter C