Man I hear some horror stories about guys who buy engines from other modifiers. They all tell me the same thing. They get nothing but excuses from the mod guy. User error, you ran it to lean, you used the wrong fuel, etc, etc. I have never gotten the brush off from Neal and John even when it was my fault. Not saying it's all free, but There are only 1 or 2 mod guys who take care of their customers as well as CRE