Well, do you change the Diff. Fluid, T-case Fluid every 30,000 miles?
I can tell you to change those Teeves Calipers that you have now and upgrade to the Akebeno Calipers. WJ's made Before
5/11/02 have the Teeves. And WJ's made After
5/12/02 have the Akebeno. When I owned my 01 WJ the brakes warp really bad, until I upgrades a 04' WJ and the brakes are soo much better.
So Upgrade those Calipers to the Akebeno ones. THose will solve your problem. You can look on eBay or www.car-part.com
. We also have a vendor here for brakes R1 Concepts.
For any other parts look on www.car-part.com
that's a good site for looking for good prices.