I have swapped the motor in my (previously Franks's) SBach model from a DLE 30 to a new OS 33GT from Probuild.
The new engine should give me a more zingy experience and will pull a larger propeller.
But the new motor is lighter and their was also a fair amount of lead in the nose anyway.
My solution was to turn up a set of standoffs from solid brass - this will give me the required nose-weight and also provide a stiffer mounting for the motor - 2 birds with one stone.