We had this problem with our 2010 2350 that we bought used last year. So far the problem is limited to the driver and passenger seat bottoms. We found a local upholster who did a great job matching and recovering just the bottoms. Looks good and cost us $300. Hoping our sofa doesn't do this. Thought this might have been due to sun damage. Now with your problem, I'm wondering. Our repairman said the covering was poor grade vinyl. Disappointing that this has happened. Like you, we love our PC.