I have a CTRL from Stu at Whoopieslings.com with the dog bone and figure 9 as standard. From what I can gather, this is 2.2mm cord. I have converted it to Dutchware with a hook and flyz and it seems to work well but I notice that the flyz are only supposed to work with 1.75mm zing-it / lash-it. My 2.2mm cord fits through the flyz holes and locks well, is there a potential problem that I haven't spotted yet? Has anyone else made the conversion?