Hello everyone, I would like to ask you for advice because I am really in a big mess.
I decided to change the bearings of my rear differential by a kit from rockauto, until no problem, but after I decided to replace the trac lok discs with Ford performance carbon discs
Reference: Ford Racing M-4700-C
I notice that the gears of the bridge are also a little marked so I order the kit Yukon YPKF8. 8-T / L-31

And I notice when the kit arrives at my house that the design of the gears is different from the original.
So I decide to mount everything in the differential, and the impossible to put the puck behind the satellites. It is too tight there is no play without the pucks no. Problem but with impossible. Do you know what's wrong? I am lost and then in France few people can help you.
Thank you.