Both axles must be in place before the hubs will pull. The spider gears just freewheel otherwise. It's like getting one wheel off into ice or mud- - - -no drive until both wheels have traction.
Jerry

"It is better to be silent and be thought a fool than to speak and eliminate all doubt!" - Abraham Lincoln
Cringe and wail in fear, Eloi- - - - -we Morlocks are on the hunt!
There is nothing noble in being superior to your fellow man; true nobility is being superior to your former self. - Ernest Hemingway
Love your enemies and drive 'em nuts!