Really?, a 3 year old unit and you guys are lecturing the guy about bearing maintenance? Boy did y'all buy that junk from a shoddy manufacturer! I have done nothing to my Al-Ko Ultralube axles but add some grease for (are you ready for this?) 8 years, that's right EIGHT freakin years! My bearings never run hot, the wheels are barely warm to the touch after driving for many hours.
OP-you made a good choice to dump the Lippert axles and Lacrosse ought to be ashamed. On the other hand you made bad choices wasting money on an RV extended warranty plan and doing business with McGeorges. A quick search ahead of time would have alerted you to avoid both.