I just bought a Series 10 Natural Titanium and the part where the sensor meets my skin bothers me. It seems like the sensor sticks to my skin and doesn't really move around, even with a looser band. I have to pick it up off my skin to move it, it doesn't slide around at all. That feeling has been bothering me. I am not sure if maybe it is because the Titanium watches are heavier? Would switching to the Aluminum help? I have washed both my skin and the watch on the bottom with a damp paper towel with a tiny bit of soap on it but that doesn't help. Has anyone else had this issue, or am I going crazy?