I installed the new idler bracket as shown on the RANS sight and left a little more slack in the timing chain than before. My wife and I went for a ride this morning. The peddling seemed smoother. What probably caused the problem was the timing chain was too tight, my fault. I believe this will solve the problem. Good service from RANS and the USPO. I ordered the part and a spare Monday and it arrived here in VABeach Wednesday. Thanks for the advice. Al
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ANYHOW>>>> When the chain was too tight it tended to put a bending moment into the bracket. I suspect it would've bent in time. Loosening it up fixed my problem.