Originally posted by InitialD
A tip to protect the rubber seals is NOT to put thin 0.1 mm shims. Use 0.5 mm thicker shims as this would be easier on the bearing rubber shield. If it's a Centax clutch, mind the end float though and make necessary spacing adjustments after using thicker shims.
Again.. very good tip here by Mr D....
If possible I even use 2x 0.5 shims(as long as the OD of the shim doesnt touch the outer ballraced housing of bearing).
With doing this, I only use a single shim in front of centax(clutchbell).
Trully, I got this tip from friend in local track which is working very fine to protect front bearing also.