rebuild problems

[traxxas t-maxx]

Okay so today I started cleaning my truck and I took the rear diff out and when I went to put it back together the hole where the shafts goes through fits but the socket where the two little peg goes dosen't fit what could be the problem.

 

[Suicide]

you put the collar on backwards. trust me i did it my self

 

[traxxas t-maxx]

Yup that is exactly what I did but thanks for the info.