I have never checked the curve on the Mallory. Pulled it out of the box and dropped it in. I need to learn how to do that. The first thing I am going to do is verify that my balncer is the correct one. I have a sneaky feeling I have a boxed wrong. The timing light is way off of my timing pionter. Never had that before.I need to buy a decent timing light also . Any suggestions on what a good light would be? What do most guys use now. Mine is about 20 years old.