strange problem with blackberry cover causing echo...

[joko]

i have had a problem with my curve 8900 cover causing caller to hear their own voices back at them on quite a long delay, which is very annoying for them, but sounds fine to me.

i have just found out its due to having one of those silicone case on it...i have removed it and the sound is fine...however i want to keep my case...

all the holes in it match up with the buttons etc - except for the volume etc which has a raised bit, but still covers the buttons...

it does not cover piece that looks like the speaker/mic...

can anyone tell me if there is anywhere else i could cut a hole in order to make the cover work?

thanks...

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