i have never had a problem getting stock axles out , a couple of hard jerks by hand. i have used an axle puller (basically a slide hammer) you can usually get or rent one from a auto parts store or your cat dealer. if its a gorilla axle , i have heard that if you drain the differential and fill it with diesel fuel and let it sit over night it will really help.
2008 Prowler XTX
4-ITP 15"SS 112 rims
33x10.5-15 thornbirds on all four corners
suspension built by diecastplaycars.com
6" Over Long Travel Suspension-jacked up 5"
sportin' 19" of ground clearance