Sure this is too late, but anyway had similar prob, just for reference it was the plate the push rod made contact with and pushrod itself (clutch plate end) it had some how created a small dimple of wear just off the centre of the plate and the push rod was worn on the end (still is) i replaced everything but the pushrod and no joy, well ,there was but only for a while until the worn pushrod (which i still did not replace) i assume has worn the new plate, i think me pushrod maybe slightly bent causing this prob to come back, take the plate off the end of the gearbox and pull out the rod (check for wear)