Calculating twice. There's a thought.

I was done for the night, anyway: That cracked the cauldron right in half and 'Reparo' just won't do it - not at least to my satisfaction. The others in the house aren't suitable (as we've already discovered).

I'll have Remus get another half-dozen tomorrow and we can start over. I'll have Kreacher bring you the notes on versions 1-6 so far, with the effects and resulting modifications.