Remove the axles, fab some cover plates for the hubs, and pack the wheel bearings with disc brake bearing grease. No need to run any lube at all in the center section that way. I'd also pull the center chunk and plate over the middle housing- - - -why haul all that extra weight around in the first place?
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!