[AdamIsAdam]

Originally Posted by PurpleVenom

MSD has a tool card that comes with the rotors that has notches cut out for each type of cap they sell. I had been throwing them away and simply guessed at how far up to bend that tab. I found bending it up too much causes premature wear on the carbon button. So, when you get a new rotor, save that bright yellow/green card, it's handy. I can get the measurements off mine if you need it.

To answer your original question, I have found it normal to see carbon dust in the cap. Word to the wise, keep it cleaned out as this dust coupled with moisture(from condensation or rain) makes a pretty good carbon "glue". This will gum up everything from the cap down to the bushing where it mates to the block. Good luck!

I'd love to get those measurements from the rotor card. I can't find them on line.