Ap movement issue

[t1mmy]

Hi

My rubber clad recently stopped keeping time. It runs for 30 mins then stopped.

I had lume/AR done recently so the face and hands would have been taken off.

Anyways - what is weird is that it works fine if held face down. Sat on my desk face down it's been running happily for over a day. As soon as I turn it face up, it runs for 15 to 20 mins then stops.

I'd love to avoid a full service - does any one recognise this problem? And if so are there any easy fixes?

Cheers all.