I use Peco code 100 track and my layout is controlled by Lenz dcc. I have a number of Peco medium radius live frog points arranged 'back to back' to enable crossing between 2 adjacent parallel lines. All works well apart from one left hand point. Almost all my stock negotiates this point without any problems. The only problem is with my Hornby Merchant Navy and Hornby Battle of Britain pacifics. These cause a short and trip out the controller every time they negotiate this point on the diverging route. They have no problems on my other 7, notionally identical points.
I suppose I could just swap out the point but I would like to understand the problem as it is specific to just 2 locos on just one point.
Any advice or opinions would be gratefully received.