Rwb you reminded me of a problem I was having with a Nissan dealer. My daughter's Nissan was making a very slight ticking noise, so slight that you could barely hear it but Nissan kept saying they couldn't find anything wrong ( car was still under warranty) so I took it to my buddy he was a mechanic for Dodge that now has his own shop, and he gave me a list of three possible problems and told me to take it back to Nissan. So trip #3 to the dealership I walk in hand them the list and tell them my buddy isn't a certified Nissan mechanic but he is a certified Dodge mechanic and he says you need to check these three things out, low and behold problem solved.
Now as far as this forum goes I suggest get acquainted with some of the members on here before you buy or sell. You can also read posts of other members where they have had dealings with other members on here, and if you hang around here enough you'll see where members try and give helpful advice to one another that goes further than just radio related problems. my own personal dealings with members on here, I wouldn't have any problem dealing with with anyone I've interacted with on this forum. Loosecannon just finished up restoring my radio and I wouldn't hesitate to send another one to him, I've actually met HomerBB and wouldn't hesitate to buy sell or trade with him, both are straight up honest men. So I suggest hang around here interact with the members and you should be fine. I'm kind of a loner ( by choice) I have a couple of friends here where I live but what I think is funny even though I haven't personally met most of the members I've interacted with on here, I consider them my friends.