No not really, there is a wealth of information on here and they wont necessarily know the answers to my questions anyway.
1. They should know the answers as "they" will be the ones teaching you! They cant be up to much otherwise in my book!
2. If they believe what you read on forum and just start teaching someone on the a/c and it goes wrong who will you blame? them or the forum members?
3. lots of instructor friends would to me be like from 4 to 6? surely you've mentioned it to at least one of them if they are "friends"?
I do understand that not all instructors will know every single thing but they will need to speak to there superiors and you should be asking them these questions, maybe none will want to get involved..