8.8 carbon fiber clutch packs tight

[Jwjetco]

After soaking in the ford friction modifier,
Assembled the clutch packs, with everything in the diff case I can barely rotate the gears by hand. Clutch paks measure in the thickness range as prescribed. Is it normal to be this tight.
With old worn out paks installed it turned freely. 1st time building an 8.8.
Any input is APPRECIATED!!!!!

 

[wmburns]

Can you explain HOW you determined which shim was used?

Selective Shims

Part Number Description
EOAZ-4A324-G 0.025 Inch
EOAZ-4A324-H 0.030 Inch
EOAZ-4A324-C 0.035 Inch
EOAZ-4A324-D 0.040 Inch
EOAZ-4A324-F 0.045 Inch