About once a month I notice trans fluid drops on my garage floor and I get under my truck and tighten about a half dozen of them back down. Why are they loosening? I'm pretty sure that the bolt holes will have fluid that has seeped up in them. I'm thinking about pulling a bolt at a time and spraying brake or carb cleaner in them to clean them out and then replacing the bolt. Anyone see a problem with this or have another suggestion? Lock washers maybe? Threadlock?