I would agree with bray on the bending of the clevelands.... the gun metal doesnt bend very well and have seen them snap tyring to bend them just a bit. Forged are like butter and bend very easy... which means they will bend back as you play... check your lie angle a coulple times a year.
If your clubs are "gun metal" they cannot be bent, they WILL snap.
To my knowledge, Cleveland does nor use "gun metal". They might be cast and you might be able to bend cast clubs plus or minus 2 degrees. Forged might be bent plus or minus 4 degrees. There is a special set of heads from Golfsmith that can be bent plus or minus 10 degrees.
When I bend clubs you will sign a document stating that I'm not liable if they break. If I have made the clubs then I know their history and will be able to bend them within the material's capability and should they break I will replace them.
Heating the clubs during bending will NOT prevent snaping, unless you heat it up to the plastic stage which will be close to the red hot glowing stage. I don't think you want to do this.
Also remember, if you are bending plated clubs the plating might flake off.
Bending clubs to get the proper dydamic lie is perhaps the most important single item for you to get your clubs to fit you. I check the clubs I have made each time the customer brings them in for new grips.