I recently installed a TerraCycle Return Idler after one of my chain
tubes 'wiggled' loose, and now the return chain is rubbing on the
frame. I have come up with a temporary solution, but I was wondering
if anyone else has come into this problem, and if they have what was
their solution? I am trying to stay away from chain tubes, but if I
have to I will install a small piece right at the frame to keep it
from rubbing.

I am considering adding an idler up towards the front, however I am
unsure if it will make a large enough difference. Does anyone have
any suggestions?

--Kevin