Sorry to hear. The problem showed itself on my '20 PP Elite around this time last year. At the time I had about 10k miles. When it happened the popping noise was loud as you described. The service manager agree that it would need the replacement MOST cables, but the problem was that they were backordered. Mine finally were installed about 2 months later, and thankfully it's been normal since. Late Sept will mark 2 years of ownership for me and I'm now at 20k miles. I hope yours' works out for the best.