Hey - new here and have a 2006 R350 CPO with an extra year of purchased warranty through Feb 2011. Car has 60K miles on it and we have not had the balance shaft issue but are concerned, I checked the engine number and it is in the "bad range" .. .two questions:

1. Is this for sure going to happen at some point in the future? Are the odds very likely this will go out or is it something that may never occur (up to 90K miles or so)?

2. Summer trip - should I be concerned about take the R on a multi-week driving vacation this summer?

Thank
Adam