Combines Hyd tank cracks on 97 9600

Just rolled over 2000 engine hours on my 94 model 9600 and never have had this trouble or problem. Havn't even heard anyone say anything about this either. I take it your talkin the tank in the engine compartment that sits in the back left cornerIJ

Had this happen on two 97 9600's not on any other year. I figure it must have been something with a batch of these tanks they had made. Got used tanks out of the salvage yard and they have been fine.