frenchboy,
unless you DEFINETLY know your problem is in your control valve I wouldn't open it up.....you may add to you problems if it doesn't go back together properly....
shy of the spools not going all the way in/out, or having trouble with the spring return/float......or the valve creeping under load, there's little you can do for it just taking it apart....
Best to do more troubleshooting before opening up components on a fishing excursion......:confused2:
Troubleshooting can be costly, but BAD troubleshooting is VERY costly..