Been having repeated trouble to get the 4 trailer braked wheels to work together for a while doing fine adjustments to get an even heat temperature on each wheel while preventing one wheel from locking up.
Well worked the morning and for the arvo spent time dismantling one drum brake to find one shoe was hitting the outer drum on a angle to the flat circular surface and some shredding the to the shoe linings creating lock ups even when adjusted in. (4 brakes were fitted new across August to Oct)
Trailer manu who I use said have the new shoe for nothing even though I wanted to pay as they are only cheap.
All brakes working in sync like a gem now. Hilux SR5 dual cab front brakes don't like towing trailers that can't fully brake there own weight.