Yes i have.. A pearl carbide and also a super carbide...the weight holes are very big,pitched and drilled right through the cg...pins are positioned in the middle between fingers and thumb.
I was concerned that the balls would not hook for me as i have a high ball speed, but they work very well. its a very controlled arc and the balls still hit like a truck. I can play a nice down and in shot, and the ball holds the line really well.
I have also seen alot of players use then when playing a very tight line, again,when you need a ball that holds when hits the dry.
If you want pics email me.....
--------------------
Scottish by birth, British by law, Highlander by the grace of God!