Is it a common known problem to the 6.5 td to crack or break a flex plate? Are there any TSB's?

Thanks for your reply

If this is not common what may be the cause?

I should know what "TSB's" stands for, but I dont....:o:

I should know what "TSB's" stands for, but I dont....:o:
TSB... technical service bulletin...A bulletin issued to an auto dealer by the manufacturer detailing a fix for a known concern. The bulletin is for informational purposes only. It is not a recall. The dealer is under no obligation to make the repair or notify customers. TSB's are intended to assist dealers in ongoing repairs.

It appears that the shop that did the install did not torque the flex plat to the torque converter well enough and a bolt or two backed out causing a slight warble noise at first which got progressively worse. I thought it might have to do with the install... got lucky