I really loved my shoestring. What a great flier. I had an OS 61 FS-P with a Pitts muffler. A great combination.
I flew it today for about the 6th time. Half throttle, level flight, and the wing departed. It seems the hot glue gun was used a little too sparingly on the wing bolt hold down mount at the ARF factory.

Shoestring lovers, check those glue joints so that you can enjoy those great planes for longer than I did.