I have checked the rudder alignment and they are spot on. Set identically to the way the old rudders were. Old rudders...no hum, new rudders....hum like h***!

I did find this in my search:

http://www.ahpc.com.au/pdf/Noisy%20Foils.pdf

If your havin girl problems i feel bad for you son
I got 99 problems but my beautiful wife ain't one