It is a little more difficult than I thought to find a place to change and bias the tubes in my guitar amp. I’m in Chicago so I figured a quick search of “tube amp repair chicago” would have more recognizable results. Chicago Guitar and Amplifier looks like it’s about my speed but their website says that amp repair has a 1-3 week waiting period. Shuh! I need to rock out now! Anybody have any recommendations? My buddy Ernie recommended Deltronics which looks cool, but it’s only open weekdays 10am to 6pm. That isn’t really gonna work with my schedule.