Good question. There are a lot of members that do own sleds other then yamaha and you are right, i wouldnt trust anyone else but ty. Post in the ty lounge for now as ive seen lots of "other brand posts" in the lounge. Not sure of the response you will get as far as help cause im not sure of the knowledge level of other brand sleds. But im sure for the most part guys will help out as they can.
You can ask here, but there are good people at sites for other brands too. Any particular brand and model, or are you asking in general? Depending on which models, I might be able to direct you to certain users on other sites.