Perth !! Dam that''s a long way from anywhere let alone the states. For online buying may I suggest High Performance Models. They are here in Auckland and shipping to WA is probably quicker and cheaper than from the US.
For my hydros the first one is over on the Red Board, but the development of the newer one may be shared here too.
There is a lot of knowledge out there to tap into for running boats, I learn from here, ose, and rrr, and taking the boats to the lake.