If there's a discrepancy in versions (as is obviously the case here) then it would be easiest to include the details in a note.  I don't think there's much to be gained about arguing over it further.  Given there is no support in the Billboard lists of 1967 for the #106 figure, I would suggest #126 appear in the article with an explanatory note about the #106 in other sources.  You could do it the other way round, but I think the weight of evidence so far (i.e. the Whitburn RS backed by the Billboard primary source) suggests the other sources are in error.