After close examination of the braking system and failing to remove the cam arms on the rear brake shafts, the only option was to make longer rear brake rods by 3.5cm.    I had to wait for a the 1/2″ bar to arrive for this, so in the meantime I removed the offside front hub and brake drum, with a view to repairing or replacing the dust shield.  The material fro the brake rods having arrived, is I proceeded to cut the right-hand threads on the bar for the adjustable forks.  When I came to cut the left-hand thread I found I didn’t have a holder for the die to cut the thread at the opposite end, so whilst I waited for the tool to arrive, I  marked out a template for the repair section for the front O/S brake shoe dirt shield.