i was teaching my little brother how to portmatch, while i was showing him how to do it he lifted a piece of cardbord covered in metal shavings and accidently spilt it all over the valve train

. i washed the with warm soapy water for about 40minutes and sprayed it with compress air for about 10 then added a thin coat of oil to everything. It looks very clean right now but im still worried if theres any metal shavings left?
heres some pics
http://photobucket.com/albums/e297/c...Picture073.jpg
thanks for the feedback..