is it something i could just open up and clean out or just replace with a new stock. the sonnax looks like a good way to go also. i have always been lost when it comes to slush box's. thanks for all the great info

 

Not easy to clean out and still a restriction. Gone is better.

 

This is an interesting theory that is pretty much just basically wrong. Chrysler/Dodge designed the cooler circuit just fine and the check valve is there for good reason.
Another interesting theory based on incorrect or narrowly defined assumptions. Assuming you have alot of garbage floating around in your transmission fluid portends much bigger problems than it invokes through the cooler circuit design.
That check ball is about the last ting that will be adversely affected by "garbage" floating around in the transmission. Properly maintained, the cooling system works just fine, as designed.
There is no restriction. The system works fine and cools at the optimum rate under all possible conditions as designed. Gone is better for people who don't understand why things are designed the way they are for good reason. Get a built transmission and/or a manual valve body if you want something different. Otherwise leave it alone/as designed.

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And FWIW, regardless of the condition of your transmission or anything else that may be wrong with it, it'll have cleaner fluid with better filtration installed.

Just in case that wasn't obvious, from the original thread title.