Two Grab Rotate Transformer Snapping when triggered

Hi,

Setting up a simple Two Grab Rotate Transformer and am noticing that when both triggers are pressed the object snap rotates a certain angle and than starts to rotate based on controller movement. If both triggers are pressed many times the object keeps rotating around even though controllers are not moved. 

The One Grab Rotate Transformer works fine and leaves the object rotation intact before rotating based on controller movement.

Any ideas?