Modifying Harrison Hoot-n-Stick

[MS]

I've heard of folks modifying a Hoot-n-Stick by opening up the holes on the end of the call in order to get more volume.  Anyone done this, and if so, how are the results and can you give suggestions on how much to open them up?  Thanks.

[M Sharpe]

I opened up one that I have from him 1 size up and it sounded great!!

[strutnrut]

I am more concerned with the tone of Harrison calls. I can't hear a gobbler gobble if I am blowing on a call. So I get the Owls fired up and let them do the work.