"Is this normal or should I try to work them out?"No, its not normal and Yes, you should try to work them out.
Read #2 in first column.
Or if deeply scored replace Any roughness could tear the cork oil seal.
Looks rust pitted.
Cars and trucks use the same ball housing regardless of tranny type.
Check attached for instructions
Illustration Power Glide Transmission Rear Pump Section
Note: Powerglide & Hydramatic trans, use a 6 bolt hole ball collar, 3 & 4 speed trans. use a 4 bolt hole ball collar
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