BTW something that I wondering about is there a left and a right for slotted rotors?

I'm getting a considerable amount of brake dust with these pads and Valk mentioned the slot can run either direction.
Please understand that not everyone is as knowledgeable as everyone else, which is a nice way of me telling you to keep your sarcastic comments to yourself.

I'm a 51 year old female and have never installed brakes let alone rotors. That I did any of this is good let alone twice. I couldn't understand a clunking noise problem and disassembled them the second time to sand the contact points and verify they were safe.

So anyway, is this correct? It would make sense that there would be a R/L. That the slot is "cutting" with or against the pad.