Didn't want to start a whole new thread for this tid bit of information. But some of you may have noticed that when your accordion thumb strap gets compacted or stretched after a while, it tends to let your thumb slip out during play. Some leather is just that way sometimes. You may "NOT" need to readjust that strap!!

If you're suffering this and your playing next to a fiddler. Have him rosin up his bow real well and slide it through your thumbstrap. The fiddle bow going in and out and up and down will ensure full coverage of sticky pine rosin on the inside of that strap. That thumb wont slip for a while after that, guaranteed. Also, it will look cool to everyone watching this take place.