Interesting to see MF finally gave up on the vee belt at each end of the conveyor belts, chain drive seems to be a sensible solution. Hate to think what that centre belt would cost from MF, the old 4 / 5 foot belts were bad enough. Used to use Apex belting in Bury St Edmunds for cheaper replacements, no connection with them myself, assume they are still trading. Cant help with the auger clutch nut, I recognize the pawl and dog for reversing the auger, but the fixing seems different to what I remember. Always used to re-section knives as long as the back was in good order. Remember as an apprentice in the mid 70's, re-sectioning four 20 foot knives in one day, not much fun!!!