Need Stealth RG3210 axle replacement

[JMitchell]

My 2012 Stealth RG3210 Toyhauler is burning through the back tires (2 axle) in about 1500-2000 miles. The inside edge gets to the cord so fast. Nobody straightens the axles out here (Palm Springs, CA). The GRVW is 14,696, so I think I need 8,000 lb axles. The originals are AL-KO, but apparently they got a divorce from FR. I'd like to get Dexter axles, but I can't find ones that have the same dimensions.

Has anyone changed the RG3210 axles who can give me a part number that worked?

Thanks,

Mitch