Need A833 advice

Or you can follow AJ's recommendation and tear the whole thing apart and put the synchros on a lathe LOL...
BAHAHA..
jpar, you can smirk all you like my junk shifts pretty fast. Besides; you have a reading/comprehension problem; I never said to put the synchros in a lathe. I said I put my gears on the lathe and polish the brake cones. Every good rebuilder will do that; it's standard procedure to make the cones flat and to deglaze them.
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OP
Depending on what parts exactly are oversize, I wouldn't accept Jamie's solution. If it's as tight as you says it is,something in that box is IMO, junk. You can run it for hours and hours, on the jackstands and all it will do is overheat the oil and/or wear out the cluster rollers and possibly/ probably, the thrust washers. Meanwhile, what's lubing the possibly highly-stressed pilot rollers in the back of the input gear?
And even if it does "break in", if the gears are that soft, how long are they gonna last in useage?
But most of all, what makes the difference from rotating in one direction versus the other? The M/S and the cluster are parallel so it shouldn't make a hoot oh a difference.
Not to mention that there is no way that the brass can cause a synchronization is there? so forget shifting, or wear the brass out trying.

Send those parts back and let Jamie break them in; why let his problem be your problem?
Think about it.