The fire to look at looks amazing and I have put it on the wall which I love but they light as been on all morning so I could test it all works and there is a terrible knocking noise I thought it would settle down after the fire had been on for a while but it isn’t and it is really getting on my nerves if the tv is one then the sound covers it but as soon as you turn off the tv there it is again knocking I’ve got a video of it but don’t know where to send it could you please advise me thank you