Your service node names (translated into the taskName property of your service task) should not have spaces in them tobegin with. Having them in the display name property is fine. If you have them in the name Designer will strip them out.
Hope this helps.
Ok, makes sense. Will follow that convention in the future. It was a bit odd that in the eclipse editor we were able to do that fine but since we are moving to the guvnor designer we'll stick with the properver conventions.