Hi LBSC123! I am having this issue too, but it seems to apply to 'short' locos only, like Jinty 0-6-0s, but a really old Minitrix Boadicea trips the relay perfectly every time. Which is frustrating. The symptom is that the locos stall first time through on a 'new' points setting, but then once you push them through they relay appears to have been tripped and they run back the other way perfectly. Some of the other solutions here sound a bit drastic, and yours sound simple.
Except that I don't understand exactly what you have done. What contacts did you put a wire between to get what to 'click'...?