Easiest 727/904 rebuild thread...

I already gave my checks and x's on the driveshaft angle thread. And, Duane, a filter won't stop particles that are already inside the trans passages. Why can't you give a little more thought to your posts? You sound a little too willing to allow people to make mistakes that involve removing the trans to fix; because when valves hang up, it can destroy clutches and bands; and anything that needs lube. Kind of uncaring and destructive, I'd say.
You don’t have to remove the trans to fix a dirty valve body, but I get your point.
But I have rebuilt units with rust on the parts.
It just take more time to clean and prep, but it can be done and they will run.