[Lynn Eades]

If you are turning the drums out, then it would be a good idea to put in a lining that is thicker, by the amount you take out of the drum. the original was a woven lining.Talk to the brake people about the fact that it is low speed (drum to lining) If you get the same place to do all the work (drum turning, supply and fit of linings, they can put on an o/s lining, and grind it to suit your drums, which should give you good functional brakes, right from the start.
Be careful, if you servicing the bisectors (actuators) It is easy to assemble them incorrectly. They appear o.k., but there is hardly any travel.
Clean out the oil drain hole through your back plates.