GWS Tiger Moth Motor Mount Broke!
One reason the motor mount is made from wood is because it is better to break the mount (cheaper) than it is to break a gearbox. I broke the mount on my pico stick Fuse and all I did was take a small screwdriver and carefully just pick out the pieces of the broken stick. But then I was not so woried as to making the hole a little bigger because I switched the IPS motor to a EPS motor and it takes a bigger mount anyway.
If you do use the IPS mount (smaller stick) and the hole is a little to big all you have to do is use a glue that is expandable. I used a product called Gorilla glue. Just put a few drops in put in the mount and it will expand to fill in any gaps caused by digging out the mount.
By the way when you replace it use something like spruce or basswood. Dont use balsa it is way to soft.
Hope this helps.