Dont mess around with another stock head, go with this one
It is made of high quaility 7075 aluminum, I run one on my XTM .247, not only is it strong, it will cut down on the heat by alot, I went from running 250 on my .247 to running 215-220 under extreme conditions. THis will cure all your problems, and they wont happen again!! The head along with some other goodies can be found at
www.Novarcproducts.com , they are great people to deal with and thier products are top notch.