Adjusting the new Microphone Tutorial

I want to use the new microphone MC control tutorial that was just added, however the sound get awefull distorted with a nasty echo. Even though the code tells the echo to turn off, it seems to keep going and then distorts. Is there a bit that I can add to the AS to make it put an invisable cieling on how far the echo can go or volume can go until it stops at the current volume?