424 Skill, 118 MND, 86 VIT
Predicted Cure V amount: 713

50% potency
713 * 1.5 = 1069

obi/cape
1069 * 1.15 weather bonus = 1229

No roll 1229
Match

Healers roll 5 1290
Roll 5 = +5%

1229 * 1.05 = 1290
Match

Bust! 1179
Bust = -4%

1229 * 0.96 = 1179
Match

Healers roll 10 1314
Roll 10 = +10%

1229 * 1.10 = 1351
Not a Match

Can't be +7% (1229 * 1.07 = 1315)
Can't be a different base (1314 / 1.1 = 1195, which can't be reached by any combo I can think of)

So something's not right with that result. Capped HP, maybe?