Gadgetman - what compelled you to use a resilient mount? I think that you will find it that they are not necessary and will cause the engine to vibrate around more. Suggest removing and replacing it with the large 1.80 size GP nylon mount. It is plenty strong for the BME-50. You'll save weight as well.

PS - from your picture, it appears that the engine mounting screws are bent. The lock nuts are flat to the beam rails which are at a different angle than the beam rails the engine mounts on. This will cause the screws to yield.