You know, I'm just starting to get proficient and used to the MXT and the only thing I still don't like is how it pinpoints. I have the older stock 9.5 on this machine (its about 3 years old, but I've only had it about 4-5 months). I was using a Tesoro before I got this and the Tesoro pinpoints like a dream, with its smaller center hole. Is the pinpointing issue why people have to buy the expensive add-on DX-1 pinpointer? Seems to me that if Whites made like a 9" or 10" concentric spider coil with a smaller center hole that could pinpointer tighter, there would be no need for that add-on. Is the center hole on the Super 12 coil smaller than the one on the stock coil?