PLovett
BC 17T has an NDB (YRB) 1.5 N.M. before threshold on centreline.
Sation passage at YRB should put you inside +/- 20-degrees of centreline, so any LOC lock should be very near centreline and not a false capture or false course. If your LF DF doesn't spin before you are a mile from the runway . . . you are likely not heading for the runway centreline . . . ?
The prop jockey landing on 17T had this advantage (albeit with no GP) . . . likely more "aware" because of no GP?