David Franks
Hi, what you need is an omega loop connecting the motor to the point, an omega loop is a piece of suitable brass wire say 0.7 or 0.9mm dia with a U shaped loop in the middle which absorbs excess movement of the point motor. I have dozens of them working on my layout Wharfeside and they take the ‘shock’ of a solenoid snapping across when used with handbuilt built points. Experiment with different sizes of wire and sizes of loop.
All the best.