the way it sounds like you wheel, just run a C-clip.

Your comments on his "duplicity" would be correct... if there weren't *TWO* C-Clips. Even with a mar-tack you have to run the big c-clip, that sits closer in toward the diff on the inner shaft. Otherwise the axleshaft can slide out into the birf (martack only prevents it moving the OTHER way) and then a torque load will try to expand the bell.

Longs birfs are heat treated so that they are softer, and would wear out sooner than a stock birf. Stockers, while long lasting, are very brittle... and will shatter when shock-loaded. Before the heat-treat, they have a 1/4" ring welded around the edge which greatly strengthens the birf's bell. However, this also prevents you from taking the birfield apart.. so the mar-tack is a good idea, because if you run an outer snap-ring and break an axleshaft off inside the birf, you won't be able to get the tiny piece of shaft out on the trail to install a spare axle. About the only way to get it out is to weld a nut onto the end of the piece of axleshaft and yank it out with a slide hammer. If you have mar-tacked the shaft, and it snaps, it'll be much easier to remove as long as the splines haven't twisted.