Refer to the RB25 Cam Cover thread for more info, but it's going OK, a lot slower than I would have liked but thats out of my control.
Why was there problems with the cam gears and the plenum? My mechanic said he had dramas fitting the Inlet GReddy Cam Gear, so we kept it off. Although I'm not sure if it was realted to the NEO Spec Cams (1998 R33 40th Ann. Ed.) or not.