Well, I figured it out at least... 
I pulled the seal to check if there were any nicks, cuts, obtrusions, sublations, contusions, profusions, or any other usions. There were none. Clean as a whistle.
But pulling the yoke in and out a few times, and paying close attention to the fit, the seal did not seem tight enough. Since I still had the old seal - which was perfectly intact as I did no damage to it when removed - I measured it and sure enough:
The outside diameter of the new seal was to spec, but the inside diameter was 100 thou larger, and in fact 50 thou larger than the yoke seal surface.
Yaah, dats a gonna leaka....
It was close enough that I did not notice it when installed. In fact, even looking at it now on the bench, I have to look very, very, very closely to see the problem. It looked fine when I test fit the seal prior to install.
So ECGS sent me the wrong seal. Knowing I'd need to replace it one way or another I'd already ordered another seal from Amazon, but it won't be here until late Monday. Since the old seal is still in good shape, rather than wait I reinstalled it. Works perfectly.
I'll get on the horn with ECGS on Monday and have them replace the incorrect seal. Since it's very easy to replace this seal - mainly because of going the crush sleeve eliminator route - I can replace it later if need be. This way I can go ahead and reinstall the axle now and not have to wait for the new seal.
I pulled the seal to check if there were any nicks, cuts, obtrusions, sublations, contusions, profusions, or any other usions. There were none. Clean as a whistle.
But pulling the yoke in and out a few times, and paying close attention to the fit, the seal did not seem tight enough. Since I still had the old seal - which was perfectly intact as I did no damage to it when removed - I measured it and sure enough:
The outside diameter of the new seal was to spec, but the inside diameter was 100 thou larger, and in fact 50 thou larger than the yoke seal surface.
Yaah, dats a gonna leaka....
It was close enough that I did not notice it when installed. In fact, even looking at it now on the bench, I have to look very, very, very closely to see the problem. It looked fine when I test fit the seal prior to install.
So ECGS sent me the wrong seal. Knowing I'd need to replace it one way or another I'd already ordered another seal from Amazon, but it won't be here until late Monday. Since the old seal is still in good shape, rather than wait I reinstalled it. Works perfectly.
I'll get on the horn with ECGS on Monday and have them replace the incorrect seal. Since it's very easy to replace this seal - mainly because of going the crush sleeve eliminator route - I can replace it later if need be. This way I can go ahead and reinstall the axle now and not have to wait for the new seal.
) - but when I got there the measurements were exactly same as the ECGS seal which does not fit. And in fact, I can't find a seal with the proper 2.205 inner diameter to match the yoke. I'll talk to ECGS tomorrow see if we can figure it out. The yoke I have came from them as well, so they should have a matching seal - it just delays me for a bit. 
.
