Broken Accumulator springs are very common.
I'd replace that Acc. Plate, it's worn more than most.
Steels should be replaced, hot spots from heat/wear.
May want to invest in a Billet shafted Forward Drum. I'm sure that one has been weakend from the heat, they're the #1 weak link anyway.
OD Ring Gear is probably Ok, most all look blueish.
Check all the Planetary carrier pinion gears for pitting/cracking & check Gear to Pin & side clearance, Front, Rear & OD. Spline wear etc..