The GPA 902 driver can not be completely tight mounted to the horn flange. It seams that the flange is not as flat as it should be, and a small spring can be seen, maybe 0,2mm.

I am not sure if it is tight around the entrance to the 1inch horn opening and I have not been listening to the driver/horn yet.

However, the original filt gasket on the GPA 902 driver seams not flexible enough to accomodate that distance 0,2mm.

Is there any appropriate gaskets available ? Will some kind of glue around the outer surface of the flange be an alternative ?

Anyone with the same problem? How did you solve it ?

Or is this not any problem ?