64C transaxle axle nut torquing

[skidlid_26]

I pulled out my transaxle to clean and reseal. Passenger side axle torqued up nicely. It turns smoothly and feels excellent. The drivers side I can spin free at 100 pounds of torque but at 400 it gets real tight. I have one paper shim in the same thickness as the washer. If I remove the backing plate I can torque down all the way and spin freely. If I'm getting it too tight with the backing plate am I going to need to add another gasket to shim a little more? I am assuming thats the route I need to go. Just looking for some help on this one. I know the drum brakes need shimming but I have always thought on the disc brakes it wasn't called for anymore.
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1966 bug convertible
1964 Porsche 356C
2005 passat wagon tdi

[Jon Schmid]

No shims on my 1964C. 425 lbs./ft. of torque, apply some anti-seize to the threads first. And, of course, replace the cotter pins.

[Jacks]

Unlike VW, 356 use no paper gasket on the backing plate, drum or disc. Does the axle seem too long for correct cotter key engagement on the problem side?
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Jack Staggs
Actual name