OK, this is embarrassing!
Posting my quandary over on Garmin's BaseCamp forum, as suggested by Indrid and Seldom, I quickly got the answer. And, it hurt!
In the Route>Options>Road Type Avoidance, avoiding unpaved roads was the default setting. Simply unchecking that option made everything happy on Hwy 37 in BC and here behind the keyboard on my little 'puter.
If it wasn't for y'all, I'd still be fumbling around and frustrated.
Posting my quandary over on Garmin's BaseCamp forum, as suggested by Indrid and Seldom, I quickly got the answer. And, it hurt!
In the Route>Options>Road Type Avoidance, avoiding unpaved roads was the default setting. Simply unchecking that option made everything happy on Hwy 37 in BC and here behind the keyboard on my little 'puter.
If it wasn't for y'all, I'd still be fumbling around and frustrated.