Rebuilt rear end has a wine in it

[Al 29Tudor]

Hi all,
I just built up a rear end with good castings, axles, carrier, spider etc. Also a good looking ring and pinion set. All the bearings, races and seals are new. This was done in preparation of installing a new Mitchell over drive.
Problem is now that it has a wine in it.
The carrier was set to 17 inch pounds preload and just a very small backlash I did not measure. After setting the preload I split the shim set left and right for the backlash.
My first though is that maybe I have the pinion bearings too tight.
I sure could use some advice on the problem.
Thanks for your help.
Al