"... I'm doing my best, and will continue to contact websites to remove links to us that we do not approve of. ..."

That isn't the issue - or shouldn't be.
G is seriously unlikely to punish someone due to bad links to their site.
What is much more likely is to punish a site that links to bad sites.

So it isn't checking who links to you - but who you link to.


To make that al ittle easier ... go get a copy of Xenu Link Slueth.
you can export the data - then shorten it to only those that are not on your domain.
That should give you a list of links to other sites.
then you can review the sites you link to :D