Years ago I had a medical. The AME doing it, whilst perfectly pleasant, seemed a little nervous : perhaps a little less than used to the requirements : kept checking a list over and over, and generally didn't fill me with a lot of confidence.
There was a problem with the ECG readout (which took a couple of attempts to achieve due to the AME being "not familiar with this machine"), which meant I had to be referred to a specialist, and undertake stress tests etc. The specialist seemed confused by the results of these tests, because they showed no problem at all. His verdict was that "it's possible that the first results could have been caused by a lead not being correctly attached". Loads of hassle, worry and unwarranted expense. (I've had lots of them since, all without a problem).
Anyway, never mind ... thanks for the "advice" ...