I had a snigger about that too - G strings in church!!! And accompanying the organ as well!!

We have that problem - the keyboard is not in tune with the organ, but you can adjust the keyboard. The guitar is never in tune. It gets tuned to the keyboard. The organ starts a tune, the guitar joins in.... yup, you're way ahead of me here..... hideous din that has my teeth on edge, my buttocks clenching (and that's a lot of buttocks....) and my eyes watering. And that is before the congregation start singing!!

LTS