axle won't pop back in!?!
 

Pop axle out easily..got the new one in,,but it will not pop back in...when i remove the safery pinit goes in easily but when i put the ring back on, no go? Any tips to squeeze back in would be awesome guys?!?

I haven't done this, but from looking in the Bentley and Haynes manuals, this is what I can gather:
Make sure you don't damage the seals putting the axle back in (BMW special tool 24 8 120 is mentioned in Bentley,
but probably not absolutely necessary, I think that or a similar guard is supplied with new seals),
turn the driveshaft so that the splines on the axle match those in the diff gears, and push until you hear/feel the circlip click.
Probably need a good bit of effort and things lined up just right for the
circlip to compress enough for it to go in fully.
Hopefully someone with direct experience can chime in.

I am trying to get my drivers side axle to pop back in, and it absolutely will not go. I am trying to determine what "a good bit of effort" actually is.

Finally got it. From a Ford Focus forum one of the posts said it responds better to light taps to get the retaining clip to work into the splines. From underneath I held the inner CV joint in while pushing the hub out, then letting it swing back in bottiming the CV joints to make a light tap. Worked great, and made it embarrassingly easy after all the pushing, prying , and %$&*($#^&ing