My first real issue with my CDS

I have a 4.8 CDs that is almost four years old.. approx 1700 hours and not a minute of real downtime..
suddenly my vacuum sucks, and not the good way..lift starts dropping.. fixed a couple voids in my tank gasket, and went off to another job thinking I'm good to go..
Now I'm at like nine inches lift and hearing a leak I start looking...
I found the metal pipe that is bolted to the waste tank that goes to a rigid hose coming from the blower is riddled with holes, I mean BAD!
I love my CDS, but...

My first real issue with my CDS