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Lol. I found a diagram and assembly and dissassembly of the zf6 and I'm going to check to detent plunger and spring and the detent ball and spring and see if either of those are messed up.
The L99 unit bearing has a thicker rotor flange (I think the E99 is 10mm and the L99 is 13mm). the lug pattern is the same. and you can switch from the early to late 99 by getting L99 rotors with your L99 unit bearings. you can easily tell if you have a E99 or a L99 unit bearing by looking at your hubs. the E99 hubs sit flush with the lugcover and the L99 should be recesed a little.
I found that the L99 unit bearings are cheaper and easier to find.
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