No worries, Beakie... we're figuring this out together. Honestly, I was worried of sounding too defensive in my response. I tend to answer questions with questions through any kind of troubleshooting process.

It worked great with my I.S. department, lol.
I think you're right; I need to do something additional with the loaders. I tried adding the siding marker over them like Tom (I think it was) suggested and they showed up in the Loader drop down list. The fact they are listed as "XXXXLoader @ XXXXXLoadingTrack" tells me that perhaps the programming sees Loaders like the Waypoint Markers... they have to go on top of another Marker.
I haven't tested/improved that Superior unloader yet, but I am working my way there right now. I've made some corrections to some Destination Markers and added some Siding Markers at the quarries and Ronceverte that are going to help us all write scenarios. Thus, I recommend that we all wait until I can finish this process and get my Feb update out asap before we spend much time writing scenarios because there will be changes coming that might wreck them. I think it best that my time is spent working out these kinks before I extend the route any further. I like to get the problems out of the way early before they get to be huge.
Does it sound like we're ironing out a good "formula" for marker placement? If you guys don't mind, this is the kind of teamwork I like. I think this could result in a "Scenario Writer's Guide" section in my COA Route Manual.
Tori