had a mishap with the shoestring on a dead stick landing it bounced off the runway and stalled into the bushes what looked like a cushioned blow turned out to be a torn off firewall!!! If you can some how strengthen the firewall with more glue do it cause i noticed a lack of glue on the firewall once it was apart. It is now re epoxied and flies like a champ with my O.S 91 4 stroke!!!!!!!