G'day neighbour - greetings from the big island next door to you!
A beautiful place you have there - a colleague of mine visits there once a year and has nothing but praise for the people and the beauty of your home! Must get over there some time!
WRT your noises, as Wombat suggests, post your question in P&S for an answer - this forum is teaming with people willing to share knowledge. You might also try a search to see if someone has discussed the same issue - perhaps look for
W60 noise - Good luck.
Cheers