I just bought a Frontier RT1149 tiller for my 1025R and I have a question. There are plastic sleeves that go over the driveshaft. One is inside of the other so they can telescope as the driveshaft length changes. My question is that there is a little chain on each end and I'm not sure what that is for and the instructions don't show anything. Is the plastic sleeves supposed to turn with the driveshaft or do you clip the chains to hold the plastic stationary? Any of you guys know what I am supposed to do with them? Thanks!