There's an adjustment on the top of the H20 tiller arms to make sure that the cam is fully engaged. I guess if you like slop you could use that to adjust rudder rake. Have a happy New Year!
No slop. That is what the little delrin allen screw does. However, on my Wave with H20 arms, the rudders seat exactly in the housings without any need for the screws to be engaged. If I wanted less weather helm I guess I would need to redrill, but it is perfect now and I have all the mast rake I want.