Water pump wobble and question for Hart Rod and Br3w 6L80E

[Houston Ben]

Hey all,
2011 5.3/6L80 combo. While driving today I noticed a slight vibration under normal driving. It appears about half way through the rev range when doing some easy driving. It almost feels like a break draggin but goes away. This happens in every gear and when cruising I can feel it when slight pedal input is applied, when I let off the pedal it goes away. I checked fluid and it is good, any ideas???

Also, while looking under the hood for this I noticed my water pump and balancer wobble a little, is this normal??

https://www.youtube.com/watch?v=zNye...ature=youtu.be