The kingpins in 05 were stainless Bob. Not sure when they changed to stainless though. For a brief period before 05 they tried "Nylon" bushes. (Not really Nylon, but some new fangled synthetic which didn't work).
The problem I have with re-bushing is that the bushes fit perfectly round the new pins before being pressed into place. Pressing-in distorts them to the extent that they must be reamered, but the only way a tube can distort is to go out of round, so I reckon the act of pressing in introduces a bigger gap between bush & pin on opposing faces. Plus the fact that I'm not convinced that they line up properly in the stub.
Last edited by DaveW; 06/07/11 05:11 PM. Reason: More added.
