I have 5 Evolution Engines, 1 - .455, 2 - .46s & 2 - .61s. They all run PERFECT. If your going to CHUCK it, CHUCK it in a box & mail it to me.
I would like to add this.

The thing here is these engines are all good in their own right. The problem is complaints come from people who try and use them in a manner that will not produce the results they want. Meaning they are using the wrong engine for what they want to achieve. Then they come out and say the engine is junk. It's not junk.