Join Date: Aug 2002
Location: South Australia
Mine ('00 A1) has stock steels/fibres, with chatter ring - only one in the A1 - stack height is in the middle per the range in manual (around the 57mm mark if I remember). MTC Billet basket, stock hub with drilled oil feed holes per KZScott's method, and the puller shaft has been ground on one edge for better oil feed too.
I still get a "shudder" when letting the clutch out that occurs around the 1,700 - 2000rpm range, more noticable when slowly taking off, but doesn't affect performance. It could be related to the chatter ring but not sure, not too worried anyway as once underway it doesn't affect it and I have a quick shifter as well. And this is with the 1287 build.