Setting up new shoes …..
Easy way to ‘synchronize’ the two adjusters before you slide the drum over the new shoes.
Measure the distance between the adjuster pawl, and the bottom of the new shoe. Adjust both pawl’s the same. Easy to do with a digital read-out caliper.

Make the fine adjustments with the drum installed. Equal amount of clicks on each adjuster pawl will get you there, and insure equal wear on both shoes.