Touch (Pinch) Zoom

I am using rotation & zoom with touch one finger (Rotation) & two finger (zoom)
My problem is the Zoom is also rotating the object which I do not want. I was thinking that the Zoom was also triggering the rotation, but coding the rotation condition not to perform if the Touch 2 is active but this did not work so I am stumped on how to stop the rotation.

Any thoughts, I am using a windows surface pro 3 device.

Thanks

P.S. Seems no one has an idea to the problem