Help Installing axle shaft.... will NOT seat

[jd_boggs]

An axle seal failed so I'm replacing all seals, bearings and ruined brake shoes.
I removed the bolt and pulled out the steel rod to remove the C-clip. Then removed the C-clip from the diff to pull the axle shaft and begin bearing and seal replacement. After after replacing bearings and seals I lubricated the seals and bearings both. I tried to install the axle shaft but it will NOT fit. It binds up and will not travel the last 3 inches. What am I doing wrong?
I tested bearings and seals for fit on one of the axles shaft because they make 2 different sizes. So I tested for proper fit before installing them.
Is there a special trick get them aligned?
I welcome any suggestions. BTW, it's 1981 K10 4x4

Thanks

[bilfman]

It's the old wiggle and turn. Just have to keep at it. Remember you will have to push down on the axle to lift the splines up. Good luck!

[Jake Wade]

Yep, what he said. You have to get the end up to spline through the spider gears.

[jd_boggs]

Thanks everyone for your help but it fits now.
So yesterday the axles sat in the hot sun and could not get them to fit but early this morning it fit perfectly. Only difference is that it hit freezing last night and early this AM I shoved them in nicely... The other axle needed a little kick with my boot. Turns freely and smooth. No drag whatsoever. Thanks.