Rear brakes on E46

[scud]

I had my E46's rear brakes done before I accepted delivery. The guy put the old rotors in the trunk, I saw the new rotors and pads. The problem is I've only driven 100 miles and there's this yellow/orange shit caked on my rotors- it looks like perhaps the mechanic didn't remove the melanine off the rotors- It's only been 100 miles- is it too late, are they now shot? Should I try to let driving take care of it, or should I remove the rotors and sand / scrape them- what about the pads now?
thanks guys
scud

[lwebb12]

do you have any pics?

[scud]

no- I just picked it up, just put the 100 miles on it- it's like an almost rustish colored stuff- the rotors look new everywhere else, but the surfaces look like this crap has collected and cooked on the rotors for that quick 100 mile period you know.. should I try to remove it? Does it pay to even try this? Will it eventually just kind of drive off of the rotors? I'm honestly a bit upset about this- usually rotors surfaces look nice and shiny because the pads are making corrected contact- clearly something looks wrong here, but the question is whether or not to actually do something to remove it, or, will it kind of rectify itself with time and driving....

thanks
scud

[lwebb12]

take it back to the mechanic and ask him what he did wrong.