The latest problem I've had with my X-Stream, since JimFPU contaminated it by installing a surrey top on it while it was in his possession, is the loss of the idler retainer/chainkeeper somewhere at WRL. The stock retainer is a rubber assembly that expands into the I.D. of the hollow idler shaft when the screw in it is turned clockwise. Decided to fabricate a retainer from aluminum, since the stock rubber retainer deteriorates, after extended contact with chain lubricant.
Idler shaft and removed TerraCycle idler.
Initial turning of idler retainer assembly on my Atlas lathe.
Disassembled expanding-segment idler retainer/chainkeeper.
Assembled retainer/chainkeeper.
Installed retainer/chainkeeper.