yes, shoes probably need arcing - good fat new shoes in good drums will usually be "too thick", but if the adjusters are really backed off alla way, the shoes need to be shaped to the drum, then run in and adjusted after they wear a bit
"When we tug a single thing in nature, we find it attached to the rest of the world" ~ John Muir "When we tug a single thing on an old truck, we find it falls off" ~ me Some TF series details & TF heater pics