X-gliders for curtain tracks and inner running bars are not bad and are 100 pieces for a great price. You just have to just be careful that they are also attached to the rail which is far from certain when the own Machine is one of the exotic;)
I do not, unfortunately, happened and now I have 99 X-gliders for curtain tracks and inner running bars that I can currently start anything. If you want so they can have free write me happy.