Yeah, just strange that I not had the problem in 24 years after building 3 houses. However, I guess it has to do with how you are wired yourself. If you think everything that is done in the west are better, and then people here do it another way. Yeah, then it´s easy to say they are wrong and do a faulty work. I think we all have to understand where we live. Here they do things in a different way. Mostly they get the same result, though. Things are working, and if you are there when they do things, you can always add what you want them to do and how. Of course, that will assume you speak Thai, but that is like a duty to learn the language if you settle down in a foreign country.