My replacement rollers are now at 12,000 miles without any signs of breaking (fingers crossed). As you gave me a hand to do the change on my car I feel it's only fair to offer my assistance. I am sure it will be easier and quicker this time, learning from our experience. Understandable if you want a more "permanent solution", I think I would go for that as well if there were no time constraints. Strangely these problems always seem to occur when we are using the cars.