I don't think they're very touchy. Hang them so they are pointing straight down and not horizontal. I think it is important though not to jostled them a lot and move them around more than you have to. Once they are up and adjusted to the correct height then leave them alone. Sometimes people think they burn out quickly because they turn them off and then turn them right back on and nothing happens. It takes them a while to come back on so wait a while before you attempt to turn them back on. I hope that sentence made sense.I heard the mvb lights are super touchy and will blood easy with little movements, is this right, how are they for you?