Can't divide the horn and driver

[mountpor]

Dear all,

I have a problem due to 4 numbers of horn can't be divided. The reason may cause by my over tight screws before.

Any one can help?

Many thanks!

[Zilch]

There is usually a gasket between them which, over time, sticks them together.

I use a utility knife blade as wedge, tapping gently on the back edge, from several points around the circumference.

To separate drivers from cabinets, it's a painter's 5-in-one tool with beveled edge....