Took a while but I found some images for you, should help:
http://f30.bimmerpost.com/forums/sho...1&postcount=34
Also check out this great guide with detailed instructions:
http://www.mediafire.com/file/m33a3n...30+Rev.+3L.pdf
You mentioned you have a sports line steering wheel, it's not the M-Sport wheel though? If not, absolutely remove the old steering wheel with this method: