If you twin stick your transfer case you will probably end up going back in to deal with those shift rails again. twin sticking usually cause the case to jump out of low range going down steep grades. twin sticking relieves the inherent binding the single stick has in it.
JB Conversions has a spring kit designed for the twin stick pop out problem. It replaces the detent springs and adds a ball to the deep side bore to give equal pressure to both rails. This kit works i have used it on mine.
Now to get the rails out it is done in a specific order and you have to have them in a certain position to remove. The instructions in the spring kit detail removing the rails. The pills even stop the rails from coming out. There is a way to get all range choices with out removing the pills. you have to grind a slot extension on the front drive rail. It is very easy to do. once done you will get front high range and still have the interlock functional.
Here are a couple of links for you.
http://www.jbconversions.com/products/dana300/ballspring.php
http://www.4x4wire.com/tech/dana300/