Hey BigThumb. Sometimes ,despite everything we as performers do to ensure a good sound at our gigs , the world of construction materials and reflective surfaces make it an un-winnable fight. Don’t be so hard on yourself. All these factors add to the stress of having new/returning members and new songs and therefore impact on the performance. Your next gig should be based on things that you can control and not things that you can’t. Upwards and onwards (or is that Buzz Lightyear’s saying?). DLTBGYD!