Hi all, first post! Had quite bad bearing noise in the gearbox, suspected diff bearings. I have begun stripping the box and gotten to the stage of removing the nuts at the end of the input and output shafts. I have removed the split pins and tried turning them left to loosen. No joy. I tried turning them right in case they were left hand thread. No Joy. Should these be this tight? Thanks for any advice. P.S. The hardening on some rollers had gone on the diff so I plan to replace all bearings