I have the Pro Flight series 2 and have the same issue with the loud 'bang' sound when moving the mic.
it seems to be more prominent when having the mic switched to the right side, but it now happens also on the left side.
Headset is unusable like this. The sound is really really loud and harmful.
I have sent it in for a repair but got it back with the problem still temaining.
Are there more people with this issue? Or has anyone found a solution?
I'm going to return mine and ask for an exchange.