Work continues on the braking system with the refitting of the offside rear brake drum.   I next removed the grease nipples from the brake cam shafts and pumped strong pentrating fluid into the holes, in the hope that this will release the adjusters.  I intend to repeat this several times before final greasing.   After that, all the studs on both rear wheel hubs had a die nut run down them and nuts matched to the thread and lubricated with copper grease.  I have enough (hopefully) new wheel nuts to replace all the rounded-off and missing old ones.