Thanks David and Gary
Revolution still list the SUL as a lighter option with .6 oz? ripstop?, I will have to check that its truly different.
I've got SUL(2 wrap spar) SLE(3 wrap spar-not sle spar) and VENT (EXP type spar and SLE spar for gales) and I use all 3 farely equally, its this I'm trying to replace, I can fly from 1-20 plus.The sails I've got are tired and saggy (like me) and my thought is to start afresh with 3 new sails.
thanks again for the advice
fungus