The problem you are having with the I20 will fix it self. The US/EU I20 will soon be the same boat world wide known as the Nacra 20. Look for an updated Yrxel number this summer.
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With this main, the N-20 in Europe will be the identical specs as the NA boats are. Are we gearing up for a NACRA 20 worlds? Note the specs. At PC site are the old main sail area & not the North America spec. which has become the accepted NACRA 20 one-design