what you write is more fin problem - as pfaffi said. hurricane have couple of very powerful model, what not fits to this board. i tried the 167w with deboichet R20 fin, what was perfect for my 162, but does not work in 167w, was good only in low end but in gusts and stronger winds in chops the board getting nervous with it.
for me the Virus 70 was perfect, if you prefer hurricane talk to otmar and he can help you to find the right fin for 167w from his range.
let us know,