Must be new moulds in use for the air vent to have changed location. Strange one.
Also, looking at Dave's photos, the white lines on the new model seem a bit thicker and the top orange portion seems to extend slightly further up the roof. Not a deal breaker but the older 1508 model seems more accurate livery wise to the real thing.
Cant wait for the 121's to be released but the wobble issue on the Cravens released in the last while, the vent in the wrong location and slight livery variations on the new Cravens buffet worry me slightly, as it seems the standard coming from whatever factory is used now doesn't seem to be as high as the previous factories used for these models.