Reintroduced a lot of downsides at earlier Grades (or even made them harsher), and tweaked some HP values.

Universal:
All HP values corrected to intended values
All stat buffs/debuffs correct to intended values

Industrial Lifter Arms:
Strength min -10% -> -15%
Thievery min -50% -> -80%

KLR Series Arms:
Dexterity/Strength mins -5% -> -20%
HP max 200 -> 175
Swimming min -25% -> -40%
Swimming max -25% -> -30%
Thievery max -5% -> -10%

Skeleton Arms:
Dexterity min -10% -> -15%
Thievery min -25% -> -80%

Steady Arm:
Dexterity min -5% -> -20%
Crossbow min 0% -> -15%

Thief’s Arm:
Dexterity min -5% -> -18%
Dexterity max +7% -> +10%
Swimming min -40% -> -30%
Swimming max 0% -> -15% (original value)
Lockpicking / Thievery mins 0% -> -10% (original value)

KLR Series Legs:
Athletics min 0% -> -60% (original value)
HP max 200 -> 300 (original value)
Stealth min -40% -> -90% (original value)
Stealth max -15% -> -50% (original value)
Swimming min -40% -> -50% (original value)
Swimming max -15% -> -35%

Scout Legs:
Athletics min 0% -> -45%
Stealth min -75% -> -80%
Stealth max 0% -> -10%
Swimming max 0% -> -15%

Skeleton Legs:
Athletics min -5% -> -55%
HP max 150 -> 175 (original value)
Stealth min -35% -> -85%
Stealth max -10% -> -25%
Swimming min -35% -> -50%
Swimming max -10% -> -25% (original value)

Stealth Legs:
Athletics min -2.5% -> -50%
HP min 50 -> 60
Stealth min 0% -> -50%
Swimming max 0% -> -15%