Eaton Spring Perches

[Budweis]

was starting to go through rear end today to figure out parts needed and noticed i might have a problem on my spring perches. as seen in the picture below one side has a stud sticking out and one side just a shallow hole. perhaps this is suppose to be like this not sure but doesnt look right to me. maybe the stud on the drivers side will come out? also the plates shown measure 5/8" thickness, i think i read they come factory with these right? overall the whole setup dont look like it would hold differential tight so if someone could clue me in on problem id appreciate.or if someone knows where i can locate the new spacers would be nice.