I just ordered the iBeam for my Taylor 310c acoustic guitar. I wanted the iMix, but couldn't afford it at this point so I went with the iBeam. In reading reviews today I've discovered that some have had a problem with feedback. I lead worship at church and do mostly strumming with a pick. We have a full band including keys, electric, bass, drums, background vox etc. Should I be concerned? Are there any suggestions for getting around this if it is an issue?