@TheRealWolf, regarding the use of caulking to attach the Back Cap, I would only use a small amount and spread it thinly over the U-shape surface. The air gap provided by the Back Cap design is meant to support speaker function. The caulk connection between the Back Cap and the camera is virtually movement-free, so a thin amount will work. See picture below.
Based on my experience with the maintenance of V2 and V3 cameras, I have to agree with @Ipil60R34s, heat isn’t an issue.
Victor Maletic.