The other detail that most don't notice is that the quick jack orientation on the car is actually BACKWARDS (i.e. the BIG tang is toward the back or the body side of the car). I first noticed this in a Cobra book my wife bought for me last Christmas. Makes since given the fact that you wanted an easy 'guide' of sorts to engage the lever.
Or said another way, all of the current reproduction Cobras have the quickjacks facing the wrong direction.
-Dean