Been riding my worx for 1200 miles now and enjoying it very much. Have had one problem with the choke freezing open but it was very cold about -7oC. The bike started fine i put the choke on and could not get it off without using WD40 as antifreeze on the control. The chain needed lots of tightening, more than expected, but nothing over the top.
It is a great machine will do 67, down hill, on the flat will pull 63. Really good milage as you would expect for a 125.