I'm sorry Don but thats not even remotely correct.  I can't speak for the J model but since it is based on the T-56 I'm sure it runs the same way.  
Once the engines are out of Low Speed Ground idle (its just a button thats even simulated on CS C-130) the engine runs at 100%, that even means the prop (1020RPM).  There is so changing them at all.  The Condition is basically a set of 4 switches...sure there is a mechanical linkage to the engine thru them but they perform the same function.  The switches do 4 things. I'll simplify some of their functions.

1. Air Start (Activates the Aux pump allowing the propeller to unfeather)
2. Run (Basically just sets up the engine to run)
3. Ground Stop (Shuts down the engine)
4. Feather (I think you can figure that one out)

Its different from other turboprops that allows you to control some of N1 thru the condition lever.  So what you were probably doing was trying to control prop RPM thru it.  Moved the Condition lever out of Run and went thru the Ground Stop micro switch.  Thats exactly what would have happened in the real aircraft...plus some other bad juju  ;)

As far as the props changing rpm when you move the condition lever even the slightest is just Microsofts faulty modeling of turbo props nothing more.  

The engines between the C-130 E (T56-A-7) and the H (T56-A-15) differer mainly in Turbine section and nothing more.  They funciton almost the same.
I hope that all made sense Nick if not I can run it down a bit more.  Big thing to take away from it, no touchy in flight unless you need to feather or air start  ;D

Regards,
Brian