3.0 V6 supercharged crank pulley wobble

Hi all, picked up my 2015 xe the other day. When I had my car in for a check over my local jag specilist said the engine sounds fine but thought the crank pulley wobbled a fair bit on idle. The wobble goes as the revs pick up, some people on the facebook page said theirs do the same and I spoke to my local jag main dealer whom said a degree of wobble is normal. Could someone on here please confirm if the 3.0 v6 usually has this crank pulley wobble. 

 I've attached a video but it's not very clear you can see the tensioner bouncing slightly as the pulley wobbles