Unscrew the BISS all the way out. It'll start to spin in place at the top, all you need to do is get something small and push the BISS the rest of the way out.
new BISSS and Oring from extremepsi. My old one is only 2500 miles old, but better safe than sorry I guess. Make sure it's lubed (I used white lithium grease) before you install.
Time to tap the shaft. Again, I used a #19 drill bit and then a 5mm x .080mm bit with a 10mm long bolt.
A little unorthodox, but using a drill is much easier than hand tapping. I just make sure I put it in reverse every couple of revolutions.
I used new bolts that are flat headed instead of phillips head, I will be using blue loctite this time around.
