Brad,

I resemble that remark!

I would however like to point out that responding to this thread is a lot like picking a scab.
You know you shouldn’t.
You know if you do, it just won’t get better.
You know any pleasure you get out of it is absolutely mindless.
But sometimes you just can’t help yourself.

As per my comments above, while I am here, I know I shouldn’t, but what the hell.

A weak, poorly contructed and sealed container will split if too much pressure builds up inside.
A strong, well constructed and sealed container will hold a lot more pressure. The down side of this that when it fails it will fail in a bigger way.
Maybe the problem is that the newer cells are BETTER contructed. (Remember the rules. Upper case is used to indicate that it is unarguably true and I am not interested in any sensible argument on the issue!)