Just got a set of the yellow mediums today.
One thing that i thought was kinda weird was that the bottom bushings were pretty hard to get onto the truck. I had a hard time sliding it down the kingpin, I had to force it down the kingpin. At first i thought that the holes in the bushings were too small and wouldnt fit on the kingpin, but i eventually got em on there.
Also, when i was tightening the nut on one of my trucks trying to find the right tightness I heard a crack, I looked at the bushings and it looked like everything was ok, hopefully it wasnt the plastic piece cracking or anything. I didnt even crank em down that much or anything.
Other than that though, I have to say that they feel really good. It gives the trucks a real snappy turn, which i like. Not too loose, but not too tight.