Hi,
Just to let you know you are not alone! As an ATCO we get issued Class 1 medicals also, but with slightly different criteria.
As a baby i was diagnosed with a murmur, but as i grew up the doc said it was no longer present. Went through an air force medical, and nothing found there either. When i went for my ATCO medical the doc got quite worried, and booked me in for an echocardiogram at a private hospital the following week. The consultant there listened o my heart first and i later found out she panicked as she thought i had some form of aortic murmur (which could be quite dodgy apparently). had the ECG and the consultant told me there and then everything was ok, and in fact i had "beautiful delicate valves" whatever that means! (maybe i pulled! but too late now
) Sending the vid is usually standard procedure so that the CAA can sign you off.
I wouldn't worry about it, best it has got checked.. let us know how u get on!
81