Hopefully someone on here can help me out.
I have a 63 aluminum cased corvair steering box that I reveresed. Everything turned out great but my seal was leaking grease out of it at the input shaft to seal area. I replaced the seal with a brand new one and it still leaks out grease. The seal is seated tight and properly within the "cap" and the seal to shaft contact area is real tight. The seal was hard to slide over the input shaft so I figured it would fix the leaking. When I reversed the box I filled the whole case full of GM steering box grease. I am thinking that maybe the case should not be filled completely and there is too much grease in the case and when the worm gear moves toward the the cap it forces grease out through the seal. So should the steering box be full of grease or should it be 1/4, 1/2 full, or something like that?

Thanks in advance,
Thomas