I have contacted a few sellers in the States requesting that they ship with out using Global shipping and they have been very cooperative and shipped with out using it. I just explain that used items, books and items costing less then $200 dollars CDN( are usually) exempt from duties and import...
Also I find that EBay's Global Shipping is just a money grab as they charge fees for items that are duty free such as books and USED items. AND then they add a disclaimer that you you may still have to pay duty and other fees! As far as I'm concerned the import and duty fees should be left up to...
Not sure if this has been mentioned but have you ever adjusted the backlash on the the lathe spindle? When I first got my V10-P up and running I had the same problem until I got the backlash properly adjusted.