Replace BOTH those Belleville washers, they fatique with age.
When you shim them, get the washers to compress as flat as possible, without locking the rack up.
They only break because they flex too far when things get worn.
If it's an Oz made rack (13/16" actual rack diameter) Nolathane do a rack bush for it, p/no is 41039.
Karcraft sells a nylon bush for this too, their p/no is KC2872.
Note that UK racks are 3/4" dia, and these parts don't fit them.
Check the bearings, if not rough you can re-use them. All the Mini places carry these. Fit a new seal.
I use Loctite 515 Master Gasket sealant, no paper gaskets required.
Fill it with OIL not grease....... 90/140 was recommended but 85/90EP works OK.
The factory that made these racks (Cam Gears) recommended that ALL racks (even the later grease filled ones )be topped up with oil.
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DrMini- 1970 wasaMatic 1360, Mk1S crank, 86.6HP (ATW) =~125 @ crank, 45 Dellorto (38 chokes), RE282 sprint cam, 1.5 rockers, 11.0:1 C/R.
