[Kamog]

So far nobody thinks it's spelled "moding". Spelled, speled, spelt? Nah, must be "spelled". Notice how if you keep staring at a word, it begins to look strange and you become unsure of how it's spelled? Or maybe it's just me.

I agree with PvK, it is pronounced "modd - ing", not "mode -ing", since modding is an abbreviated form of "modifying". Even though "modifying" has only one d, we need the two d's to preserve the pronunciation.