You can't compare reading the forum with having your questions asked by other people. If you read the FAQs, you'll see some doctors claim they can do 14cm, and I was pretty convinced it was doable, until I asked here and almost everyone told me 10cm is usually the limit.
This is a forum to provide and share information about LL, and so we should kindly help him.
But he should search a bit more before opening every thread. That's also right.