I live around the boarder of NSW and QLD on the east coast of australia. Supprisingly it is balanced great! I didn't have to do anything to it. I don't freeshaft but I wanted to try out the closed muzzle wooden gun, plus I wasn't using a shaft with shark fins so I could do it. It has a full length rail and is dead on as you can see by the pictures - that was after about an hour in 5-7m vis.
That handle believe it or not is actually plastic. I'm sure anyone in the USA could get a hold of one! Its a stanley plane handle! I just got a length of stainless threaded rod and glued it into the handle and then bolted it to the stock. Strong cheap and a great grip! I suggest you guys try it one time if you can find a handle somewhere.
I saw about 10 handles on the UK ebay for about $20 one time!
Cheers guys.