I posted over in SSFG, but figured I check in here as well;

I've got a well used Panasonic track frame I'm using as a commuter. I want to replace my Hatta headset with a sealed unit, but I'm concerned I won't be able to find anything with a short enough stack height. I'd like to know the Hatta height as a point of reference.

Any suggestions? I was looking at the King Gripnut, but it advertises a 33 mm stack height which I'm afraid will be too tall.

Thanks for any input.