My Garmin was rattling so following this blog;
I've got the two halves apart and can sort it out.
Only issue is that the glue they recommend isn't readily available.
So who knows where I can get the 3ml tube of this stuff (the 1 Oz bottles are £50)?
I did find one place but they want £8 postage on an £8 product and belong to the NRA.
Oh, and I'm doing a long ride at the weekend and it kind of needs to be working by then...