Doubting you can have an OH'd gov back in time to fly next week unless you go with the local, expensive OH house. Overnight shipping will close that cost gap pretty significantly.
An option if you really gotta go =
Buy a new Jihostroj gov which is reportedly the Czech governor that is re-labeled to PCU. New is ~$1500 last I saw. Good chance WW or others have it on the shelf. OH the old at a more reasonable price/time frame and sell here.
Just a thought if you really need to fly next week. Good luck