Thank you all..... problem solved. I did what K Charles suggested and it worked great. Actually I had them in correctly but I needed some verification. I have the filter bowls numbered now so I won't have to guess. I removed the bowls and turned the water on. The bowl that started gushing water was the primary. Just like K Charles said.... simple.
I put the "Five Micron Sediment Filter" in the primary bowl and I put the "Five Micron Carbon Block Filter" in the second bowl. The next time I change them, I am going to use what randallb suggested. I got the ones I used at Lowes. I assume they have what randallb uses.
What started all of this is we have an extended trip scheduled for Big Bend the first part of March 2014. Several friends of ours who have camped there for years said the water had problems (minerals, etc) and they don't drink it, so I thought I would get a "leg up". Where ever we camp one of the first questions I ask is about the water. Years and years ago we ran into a really bad situation where the campground water was concerned. Don't want to go through that again. That taught us a lesson. Now we carry our drinking water from home with us in 5 gallon containers.
Thanks again each of you.
Becker