G'day Mate,
I have replaced the bearings in an AX twice, the first set I got was from Hawthorn Hobbies in your neck of the woods, Melbourne, they did'nt last long & cost me $54.00 for the set, $50.00 for the bearings + postage, so I got a stainless steel set from Boca Bearings in Florida, the cost me $56.00 delivered to my door in NSW, in 7 days, & they are great, & no worries about RUST. Be careful which bearings you get, if you can get the right ones from a bearing shop, because they have to have a speed rating & tolerance to match your very powerful motor. Also you can check out the bearing size at the Boca bearing web site. www.bocabearings.com