Ok so more updates on the RBC

I put my throttle body on to compare the edges


Marked it with a marker


and cut it down



First I hit as much as I could with an 80grit disc wheel





Then to test to see how it would work I did a small section in flap wheels



It was looking good
Then I used flap wheels 60, 80, 120



obviously I am far from done but taking a break for now.