axle bushings: D25 vs. D27

Thanks for that!  I never saw that FAQ...

Now I'm off to locate some new spindle bushings (A2 p/n 649783) and some snap rings.  But what I didn't see covered is; while "B" and "C" bushings were only really needed for bendix joints, won't the excessive bore diameter allow the pudding to seep into the axle tube?

I haven't fully buttoned up my front axle yet because I'm waiting on some new king pin bearings, but I did mock it all up.  I noticed that my shafts are pretty sloppy in the housing nearest the knuckle.  On closer inspection, I noticed that the original short side bendix shaft has a machined diameter near the joint that closely matches the diameter of the bushing in the housing...but neither of the newer shafts with the spicer joints have this machined diameter; they're rough-cast.

Will it be harmful to run these new shafts since the axle isn't nearly as supported or sealed by the bushing?  How in the world would I "fix" this situation?  Even if I found a smaller diameter bushing to press into the axle housing, the shafts themselves would still have to be turned I imagine to match the bushing.

Anybody run into this before?  Here's some pics of what I'm talking about:

Here's the original short-side shaft with the bendix joint; you can see the machined diameter that rests on the axle bushing:

Here's the long-side shaft with spicer joint that came inside my front axle - rough cast in the same location:

Here's the replacement short-side shaft with spicer joint: rough-cast in the same location:

-WRM