I had the same problem and changed mine to a Ali, one that is far better, they are a bit longer and keeps the engine cooler but cost about £600 but worth every penny, it only took me 30 mins, to change it and is very simple with the manufacturers instructions, I have all of the photo's when I changed mine last year on my 2009 Roadster and instructions, send me your e-mail and I will send it onto you
Regards
Andy
