OK, here we go...
First of all, mdxix, thank you for all of your help. I am really, really struggling with this.
In this case, force the route to take the correct road by adding your own route points. On a Mac in BaseCamp:
Position the map so you have a good view of the irregular section of the route
Select Tools from the menu bar
Hold the Option key on your keyboard
Click the route and drag it to the correct route
It should recalculate and hopefully position the route correctly. Otherwise, add one or two more points.
I began this task by working on the first couple of routes of the TA in Oregon. The routing through a couple of small towns required me to "force" the route into place block by block. Should it be so difficult/tedious? I don't mind putting in the effort, and I know that the payoff while I'm on the road will make up for this by an order of magnitude at least... but I wonder if I am doing something wrong. My basic strategy is to force the routes into conformity with what is printed on my ACA paper maps. This is difficult, but doable, on a turn-by-turn basis, although the paper maps don't have nearly enough detail for me to be confident that I am putting the route in the right place. Additionally, after doing just a couple of routes/map panels, it seems that the entire project could take nearly as long as the ride itself. [EDIT] Is "Tour Cycling" the proper setting in the route detail box that appears when I double click to manipulate the route?
I am working off of the route data that I have loaded onto my GPSR while the GPSR is linked to Base Camp. Should I be working on the data under "My Collection" and then upload it to the GPSR, or does it make a difference? I have also, as you suggested, transferred the route data into a separate list under "My Collection" but I have not been working from that. Is this a mistake?
Is there a way for me to determine whether or not the route data I am working with has already been stripped of unnecessary waypoints? When I open the "View Details" box, the alpha-numerical listings contained under the heading "Via Points" are preceded by small black dots. Are these routepoints or waypoints, or is there no way to tell? The only exception to this is the first route westbound, J0CE90. I have downloaded and transferred it a couple of times, and each time the data appears with small blue flags preceding the alpha-numerical listings. These, I hope that I am assuming correctly, are waypoints, no? And while I'm on the topic of J0CE90...
The route section and name causing the trouble is J0CE90- the very first route westbound beginning in Yorktown. Specifically, the first oddity is the routing (westbound) between J0C9N0 and J0C9L0, via J0C9M0 (which is skipped and left hanging out as an eastward-deviating spur from J0C9L0). The route should, according to the ACA map, continue down Colonial Parkway, but instead heads down what I believe is CR 5.
I hacked away at this one for a while, and while I was able to "force" the route onto the correct road it still left a route on the incorrect road. It wouldn't go away, and there are now direction arrows pointing both eastbound and westbound on what became a loop. Scary. 4234 miles on Colonial Parkway and CR5 could become a bit dull after the first couple of weeks.
My apologies for all of these basic questions. I am at a point where I am not sure whether I have been correctly executing the instructions you have provided, or if I am making basic errors in an effort that will consume many hours without ever leading to a reliable, usable result. I would be very much obliged if you could tell me only if I am going about this properly in the most general sense.