This is the adjustable one. Try to find a used one, you may have to cut down the original bar a bit. The short piece on the right threads in/out in order to lengthen/shorten the total tie bar length, then you lock it with the round nut. The idea is to get the tillers parallel. This may not solve your problem if it is one of excess weather helm, have you tried raking rudders forward? Here is a good write up on balancing the helm.
http://www.thebeachcats.com/Article15.html
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Hobie 18 Magnum
Dart 15
Mystere 6.0XL Sold Was a handful solo
Nacra 5.7
Nacra 5.0
Bombardier Invitation (Now officially DEAD)
Various other Dock cluttering WaterCrap
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