Describing a QA1 Heim joint?

[Paulster2]

I'm looking to convert my T56 master cylinder over to be adjustable. Does anyone have the technical description (measurements) of the Heim joint which is required for this conversion? If not, would someone be able to help me so I can ask QA1 the right questions and get the right part? The threaded end would be easy to figure out, but not sure on the spherical end how to describe it. Is there a tolerance there so it will slip onto the pin of the clutch pedal assy? I wouldn't know what I'd need to tell them beyond that. Any help would be appreciated. In case you are unsure exactly what I'm talking about, here is a converted one on eBay. I don't really want to pay $211 for the whole thing when I can convert my own. Any help would be appreciated.

[Paulster2]

In case anyone else was wondering about this, someone on another forum gave me this link which describes how to convert your master cylinder to an adjustable one. Looks fairly easy. Hope it helps some of you out which have ran into issues with not having quite enough clutch pedal to get your clutch disengaged completely. I know it has been the bane of my existence.